Core: attributes: new workflow with users unix GIDs

- modified module for attribute U:D:preferredDefaultUnixGIDs_Namespace
- new module for attribute UF:V:defaultUnixGID
- module UF:D:defaultUnixGID is now used for predefine specific unix GID on specific facility
- added tests for unixGroupIDs,
- added method checkListOfGIDIsWithinRange in ModulesUtilsBl