512392: Make gemini blueprint use the standard maven release process

 - Cleaned up remaining outdated <repository> configs
 - Adapted plugin versions for the recent most maven version
 - Removed the old "release" module in favor of a profile-based approach
 - Updated to the coming milestone release snapshot version
 - Included all test bundles in the release build, with test execution disabled as test execution depends
   on specific test profiles

Signed-off-by: Olaf Otto <olaf@x100.de>
63 files changed