[maven-release-plugin] copy for tag v6.0.0

[maven-release-plugin] copy for tag v6.0.0-rc.9

[maven-release-plugin] copy for tag v6.0.0-rc.8

[maven-release-plugin] copy for tag v6.0.0-rc.7

[maven-release-plugin] copy for tag v6.0.0-rc.6

[maven-release-plugin] copy for tag v6.0.0-rc.5

[maven-release-plugin] copy for tag v6.0.0-rc.4

[maven-release-plugin] copy for tag v6.0.0-rc.3

[maven-release-plugin] copy for tag 6.0.0-rc.2

[maven-release-plugin] copy for tag v6.0.0-rc.1