[maven-release-plugin] copy for tag 2.1.0

[maven-release-plugin] copy for tag java-restify-group-2.0.0

[maven-release-plugin] copy for tag java-restify-group-1.6.4

[maven-release-plugin] copy for tag java-restify-group-1.6.3

[maven-release-plugin] copy for tag java-restify-group-1.6.2

[maven-release-plugin] copy for tag java-restify-group-1.6.1

[maven-release-plugin] copy for tag java-restify-group-1.6.0

[maven-release-plugin] copy for tag java-restify-group-1.5.0

[maven-release-plugin] copy for tag java-restify-group-1.4.4

[maven-release-plugin] copy for tag java-restify-group-1.4.3