girish]# keystone-manage db_sync
Traceback (most recent call last):
  File "/bin/keystone-manage", line 37, in <module>
    from keystone import cli
  File "/usr/lib/python2.7/site-packages/keystone/cli.py", line 26, in <module>
    from keystone import token
  File "/usr/lib/python2.7/site-packages/keystone/token/__init__.py", line 17, in <module>
    from keystone.token import controllers
  File "/usr/lib/python2.7/site-packages/keystone/token/controllers.py", line 18, in <module>
    from keystoneclient.common import cms
ImportError: No module named keystoneclient.common