The plugin artifacts are no longer published to the Google Cloud
Storage but to Maven Central.
To reference released artifacts from Maven Central it is not necessary
to specify a repository in the pom.xml. This is because by default
Maven tries to find any artifact in Maven Central.
The Gerrit snapshots artifacts are now published to the Sonatype
snapshot repository [1], hence this repository must be specified in
the pom.xml if snapshot artifacts are referenced.
[1] https://oss.sonatype.org/content/repositories/snapshots/
Change-Id: Iac7d1b6e6957a9bcc43a42fab9d85dc111d46246
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
92c7393c3b