[MASFRES-9] Add pre-defined descriptor in apache-source-release-assembly-descriptor for tarball-only

git-svn-id: https://svn.apache.org/repos/asf/maven/resources/trunk@1624781 13f79535-47bb-0310-9956-ffa450edef68
Use a released version of maven-parent.

git-svn-id: https://svn.apache.org/repos/asf/maven/resources/trunk@1624782 13f79535-47bb-0310-9956-ffa450edef68