Maven release v2.2.0 (#2415)
Maven release v2.2.0 (#2415)

* [Gradle Release Plugin] - pre tag commit:  'v2.2.0-maven'.

* [Gradle Release Plugin] - new version commit:  'v2.2.1-SNAPSHOT-maven'.
GoogleContainerTools/jib,GoogleContainerTools/jib,GoogleContainerTools/jib,GoogleContainerTools/jib