[maven-release-plugin] copy for tag helix-0.8.0

[maven-release-plugin] copy for tag helix-0.6.9

[maven-release-plugin] copy for tag helix-0.6.8

[maven-release-plugin] copy for tag helix-0.6.7

[maven-release-plugin] copy for tag helix-0.6.6

[maven-release-plugin] copy for tag helix-0.6.5

[maven-release-plugin] copy for tag helix-0.7.1

[maven-release-plugin] copy for tag helix-0.6.4

[maven-release-plugin] copy for tag helix-0.6.3