[maven-release-plugin] copy for tag openstack-java-sdk-3.0.4

[maven-release-plugin] copy for tag openstack-java-sdk-3.0.3

[maven-release-plugin] copy for tag openstack-java-sdk-3.0.2

[maven-release-plugin] copy for tag openstack-java-sdk-3.0.1

[maven-release-plugin] copy for tag v3.2.0

[maven-release-plugin] copy for tag openstack-java-sdk-3.2.1

[maven-release-plugin] copy for tag openstack-java-sdk-3.1.0

[maven-release-plugin] copy for tag v3.0.0

updated doc