Support JDK 15 as launcher of Eclipse instance

java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.vmplugin.v7.Java7
	at org.codehaus.groovy.vmplugin.VMPluginFactory.<clinit>(VMPluginFactory.java:43)
	at org.codehaus.groovy.reflection.GroovyClassValueFactory.<clinit>(GroovyClassValueFactory.java:35)
	at org.codehaus.groovy.reflection.ClassInfo.<clinit>(ClassInfo.java:109)
	at org.codehaus.groovy.reflection.ReflectionCache.getCachedClass(ReflectionCache.java:95)
	at org.codehaus.groovy.reflection.ReflectionCache.<clinit>(ReflectionCache.java:39)
	at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.registerMethods(MetaClassRegistryImpl.java:209)
	at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:107)
	at org.codehaus.groovy.runtime.metaclass.MetaClassRegistryImpl.<init>(MetaClassRegistryImpl.java:85)
	at groovy.lang.GroovySystem.<clinit>(GroovySystem.java:36)
	at org.codehaus.groovy.runtime.InvokerHelper.<clinit>(InvokerHelper.java:86)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallStaticSite(CallSiteArray.java:74)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.createCallSite(CallSiteArray.java:161)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:115)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:119)
	at groovy.grape.GrapeIvy.<clinit>(GrapeIvy.groovy:70)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:377)
	at groovy.grape.Grape.getInstance(Grape.java:123)
	at groovy.grape.Grape.addResolver(Grape.java:228)
	at org.apache.camel.catalog.maven.MavenVersionManager.addMavenRepository(MavenVersionManager.java:86)
	at org.fusesource.ide.camel.model.service.internal.DynamicCamelCatalog.configureAdditionalRepos(DynamicCamelCatalog.java:56)
	at org.fusesource.ide.camel.model.service.internal.DynamicCamelCatalog.<init>(DynamicCamelCatalog.java:47)
	at org.fusesource.ide.camel.model.service.internal.CamelService.createCatalogForNotEmbeddedVersions(CamelService.java:85)
	at org.fusesource.ide.camel.model.service.internal.CamelService.getCatalog(CamelService.java:65)
	at org.fusesource.ide.camel.model.service.internal.CamelService.updateMavenRepositoryLookup(CamelService.java:179)
	at org.fusesource.ide.camel.model.service.core.catalog.cache.CamelCatalogCacheManager.getCamelModelForProject(CamelCatalogCacheManager.java:131)
	at org.fusesource.ide.camel.model.service.core.catalog.cache.CamelCatalogCacheManager.getCamelModelForProject(CamelCatalogCacheManager.java:90)
	at org.fusesource.ide.camel.model.service.core.model.AbstractCamelModelElement.getEipByName(AbstractCamelModelElement.java:1417)
	at org.fusesource.ide.camel.model.service.core.model.AbstractCamelModelElement.<init>(AbstractCamelModelElement.java:132)
	at org.fusesource.ide.camel.model.service.core.model.GlobalDefinitionCamelModelElement.<init>(GlobalDefinitionCamelModelElement.java:25)
	at org.fusesource.ide.camel.model.service.core.model.CamelBean.<init>(CamelBean.java:29)
	at org.fusesource.ide.camel.model.service.core.model.CamelFile.initialize(CamelFile.java:140)
	at org.fusesource.ide.camel.model.service.core.io.CamelIOHandler.readDocumentToModel(CamelIOHandler.java:150)
	at org.fusesource.ide.camel.model.service.core.io.CamelIOHandler.loadCamelModel(CamelIOHandler.java:110)
	at org.fusesource.ide.camel.model.service.core.io.CamelIOHandler.loadCamelModel(CamelIOHandler.java:63)
	at org.fusesource.ide.camel.editor.behaviours.CamelPersistencyBehaviour.loadModel(CamelPersistencyBehaviour.java:100)
	at org.fusesource.ide.camel.editor.behaviours.CamelPersistencyBehaviour.loadDiagram(CamelPersistencyBehaviour.java:53)
	at org.eclipse.graphiti.ui.editor.DiagramBehavior.setInput(DiagramBehavior.java:385)
	at org.eclipse.graphiti.ui.editor.DiagramEditor.setInput(DiagramEditor.java:311)
	at org.fusesource.ide.camel.editor.CamelDesignEditor.setInput(CamelDesignEditor.java:202)
	at org.eclipse.graphiti.ui.editor.DiagramEditor.init(DiagramEditor.java:228)
	at org.eclipse.ui.part.MultiPageEditorPart.addPage(MultiPageEditorPart.java:224)
	at org.fusesource.ide.camel.editor.CamelEditor.createDesignPage(CamelEditor.java:314)
	at org.fusesource.ide.camel.editor.CamelEditor.createPages(CamelEditor.java:221)
	at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:333)

!ENTRY org.eclipse.ui 4 0 2021-01-13 15:39:44.502
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NoClassDefFoundError: Could not initialize class groovy.grape.GrapeIvy
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:377)
	at groovy.grape.Grape.getInstance(Grape.java:123)
	at groovy.grape.Grape.addResolver(Grape.java:228)
	at org.apache.camel.catalog.maven.MavenVersionManager.addMavenRepository(MavenVersionManager.java:86)
	at org.fusesource.ide.camel.model.service.internal.DynamicCamelCatalog.configureAdditionalRepos(DynamicCamelCatalog.java:56)
	at org.fusesource.ide.camel.model.service.internal.DynamicCamelCatalog.<init>(DynamicCamelCatalog.java:47)
	at org.fusesource.ide.camel.model.service.internal.CamelService.createCatalogForNotEmbeddedVersions(CamelService.java:85)
	at org.fusesource.ide.camel.model.service.internal.CamelService.getCatalog(CamelService.java:65)
	at org.fusesource.ide.camel.model.service.internal.CamelService.updateMavenRepositoryLookup(CamelService.java:179)
	at org.fusesource.ide.camel.model.service.core.catalog.cache.CamelCatalogCacheManager.getCamelModelForProject(CamelCatalogCacheManager.java:131)
	at org.fusesource.ide.camel.model.service.core.util.ProjectClasspathChangedListener.notifyClasspathChanged(ProjectClasspathChangedListener.java:156)
	at org.fusesource.ide.camel.model.service.core.util.ProjectClasspathChangedListener.initializeProject(ProjectClasspathChangedListener.java:84)
	at org.fusesource.ide.camel.model.service.core.util.ProjectClasspathChangedListener.access$1(ProjectClasspathChangedListener.java:83)
	at org.fusesource.ide.camel.model.service.core.util.ProjectClasspathChangedListener$1.run(ProjectClasspathChangedListener.java:53)
	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4988)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4510)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1157)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:153)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:150)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1438)