Fix UI tests in PR job failing with bad version of Jboss Tools OpenShift feature

16:13:22 [ERROR] Failed to execute goal org.eclipse.tycho:tycho-surefire-plugin:1.1.0:test (default-test) on project org.jboss.tools.fuse.ui.bot.tests: Execution default-test of goal org.eclipse.tycho:tycho-surefire-plugin:1.1.0:test failed: Could not mirror artifact osgi.bundle,org.jboss.tools.openshift.client,3.5.0.AM1-v20180514-1227-B2879 into the local Maven repository.See log output for details. http://download.jboss.org/jbosstools/photon/snapshots/builds/jbosstools-openshift_master/latest/all/repo/plugins/org.jboss.tools.openshift.client_3.5.0.AM1-v20180514-1227-B2879.jar.pack.gz -> [Help 1]