minor fix to add plugin.properties to distribution

tests/org.eclipse.jst.server.generic.tests/build.properties

diff --git a/tests/org.eclipse.jst.server.generic.tests/build.properties b/tests/org.eclipse.jst.server.generic.tests/build.properties
index 8dd27ce..18e2a64 100644
--- a/tests/org.eclipse.jst.server.generic.tests/build.properties
+++ b/tests/org.eclipse.jst.server.generic.tests/build.properties
@@ -14,7 +14,8 @@
                genericServerTests.jar,\
                about.html,\
                META-INF/,\
-               defs/
+               defs/,\
+               plugin.properties
 src.includes = test.xml,\
                plugin.xml,\
                build.properties