Add OSIO related bundles/features to update site

As OSIO integration brought new bundles/features, we should add them to the integrated update site.
The bundles are:

• org.jboss.tools.openshift.io.core
• org.jboss.tools.openshift.io.ui
• org.jboss.tools.openshift.io.test

The features are:

• org.jboss.tools.openshift.io.feature and .feature.source
• org.jboss.tools.openshift.io.test.feature and .feature.source