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

This reverts commit 29f47dd81f3077c0b7142c1df8cba9ae246cfcd1.
Revert "[maven-release-plugin] prepare release v1.8.2"

This reverts commit 5009e0b3565220aed813f167c84df114acf010bc.
Prepared manifests for release