cinder-rtstool imports a not existing module

cinder.openstack.common.gettextutils should be imported
in cinder-rtstool instead of gettextutils.

Change-Id: I6ce047100c967d72dc31ced0903bc4ad38fecaa4
Merge "cinder-rtstool imports a not existing module"
(Test commit) Change README to reflect Jio's fork of Cinder

Change-Id: I3f26c0a736e63725aec24ca2fa12c707b8e6460f