Add pom with meta-data for plugin projects

These pom files are needed to be able to upload the plugin artifacts
to Maven Central.

Change-Id: I7c812538a4c2ddf684c0b6696fb7efc0a42002e4
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/tools/version.py b/tools/version.py
index cb7274d..92143ba 100755
--- a/tools/version.py
+++ b/tools/version.py
@@ -30,9 +30,9 @@
 new_version = args[0]
 pattern = re.compile(r'(\s*)<version>[-.\w]+</version>')
 
-for project in ['gerrit-plugin-archetype',
-                'gerrit-plugin-gwt-archetype',
-                'gerrit-plugin-js-archetype']:
+for project in ['gerrit-extension-api', 'gerrit-plugin-api',
+                'gerrit-plugin-archetype', 'gerrit-plugin-gwt-archetype',
+                'gerrit-plugin-gwtui', 'gerrit-plugin-js-archetype']:
   pom = os.path.join(project, 'pom.xml')
   try:
     outxml = ""