Add saveparticipant projects to test feature #2179

The tests in org.eclipse.core.tests.resource.saveparticipant require the
bundles org.eclipse.core.test.resources.saveparticipant[1|2|3], which
are currently missing in the SDK test feature used for integration
builds. This change adds them accordingly.

Fixes #2179

eclipse.platform.releng/features/org.eclipse.sdk.tests/feature.xml

@@ -59,6 +59,18 @@
          id="org.eclipse.core.tests.resources.saveparticipant"
          version="0.0.0"/>
 
+   <plugin
+         id="org.eclipse.core.tests.resources.saveparticipant1"
+         version="0.0.0"/>
+
+   <plugin
+         id="org.eclipse.core.tests.resources.saveparticipant2"
+         version="0.0.0"/>
+
+   <plugin
+         id="org.eclipse.core.tests.resources.saveparticipant3"
+         version="0.0.0"/>
+
    <plugin
          id="org.eclipse.core.tests.net"
          version="0.0.0"/>