[maven-release-plugin] prepare release 1.0.0.M6d

Bump version id

[maven-release-plugin] copy for tag 1.0.0.M6b

[maven-release-plugin] copy for tag 1.0.0.M6a

[maven-release-plugin] copy for tag 1.0.0.M6

[maven-release-plugin] copy for tag 1.0.0.M5

invalid refresh token should be invalid_grant instead of invalid_toke…

…n error