Explicitly set REALM when querying workgroup #2671#2672

phillxnet merged 1 commit intorockstor:testingrockstor/rockstor-core:testingfrom

FroggyFlox:2671-Failure-to-automatically-update-configure-Samba-workgroup-during-AD-service-activationFroggyFlox/rockstor-core:2671-Failure-to-automatically-update-configure-Samba-workgroup-during-AD-service-activationCopy head branch name to clipboard