[maven-release-plugin] copy for tag prometheus-2.0.8

[maven-release-plugin] copy for tag prometheus-2.0.7

[maven-release-plugin] copy for tag prometheus-2.0.6

Merge pull request jenkinsci#107 from jenkinsci/develop

pr [jenkinsci#26](jenkinsci#106)

Release

[maven-release-plugin] copy for tag prometheus-2.0.0

[maven-release-plugin] copy for tag prometheus-1.2.2

[maven-release-plugin] copy for tag prometheus-1.2.1

[maven-release-plugin] copy for tag prometheus-1.2.0

[maven-release-plugin] copy for tag prometheus-1.1.2