[Gradle Release Plugin] - pre tag commit:  '1.2.20'.
[Gradle Release Plugin] - new version commit:  '1.2.21-SNAPSHOT'.
add ability to repair primary range only
add ability to drain
Merge pull request #283 from webedx-spark/1.2-repair-drain

Add ability to repair primary range only, add ability to drain
Incorporate changes from https://github.com/webedx-spark/Priam/commit/4052c66f5312d619e614d418c9b998523e750a20
Merge pull request #291 from timiblossom/1.2

Incorporate changes from https://github.com/webedx-spark/Priam/commit/40...
Merge branch '1.2'