[maven-release-plugin] copy for tag failover_2.1.1

[maven-release-plugin] copy for tag failover_2.1.0

[maven-release-plugin] copy for tag failover_2.0.1

[maven-release-plugin] copy for tag failover_2.0.0

Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit a15a28e.

[maven-release-plugin] copy for tag failover_1.0.1