[maven-release-plugin] copy for tag mug-root-6.0

[maven-release-plugin] copy for tag mug-root-5.9

[maven-release-plugin] copy for tag mug-root-5.8

[maven-release-plugin] copy for tag mug-root-5.7

[maven-release-plugin] copy for tag mug-root-5.6

[maven-release-plugin] copy for tag mug-root-5.5

[maven-release-plugin] copy for tag mug-root-5.4

[maven-release-plugin] copy for tag mug-root-5.3

[maven-release-plugin] copy for tag mug-root-5.2

[maven-release-plugin] copy for tag mug-root-5.1