Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit b8b0005d593d164eea9e91fe2b012864a7c02e41.
Revert "[maven-release-plugin] prepare release framework-parent-2.1.5.21"

This reverts commit 353cb11edf28c5c59aff17a5ce54f1022c09c93b.
more flexible NodeExpression