Revert "Fixes #5246: Remove group permissions on generated promises with chmod"

This reverts commit edc45266c4e41ced760eac5f4b75762d5603d6e5.
Fixes #5246: Remove group permissions on generated promises with chmod
Merge pull request #574 from VinceMacBuche/bug_5246/v2

Fixes #5246: Remove group permissions on generated promises with chmod
Change version of pom.xml to 2.11.0.rc3-SNAPSHOT
Change version of pom.xml to 2.11.0~rc3-SNAPSHOT