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

This reverts commit ba9400925472d0e0cfc8e4176631e65e9464c469.
Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 4fa5f077d9de49a95d77930122ad2c15c5d42e74.
Revert "[maven-release-plugin] prepare release testng-ext-1.0.0"

This reverts commit 98c1329907a286020ff10a94f1ab2307a6668ba2.