* stable-2.9
  Allow instance mods if only osparams are given
  Use node UUIDs for locking instead of node names
  Allow instance mods if only osparams are given
  Fix a node name vs. UUID bug in instance import
  Typo in hroller man page
  Use node UUID for locking in LUInstanceMove
  Fix harep manpage title
  Fix IPolicy violation check in LUGroupSetParams
  Use FQDN to check master node status
  Revert "Display node name instead of UUID in error message"
  Display node name instead of UUID in error message
  Use node name in error message
  QA: make ipolicy test respect enabled disk templates
  QA: adjust tests wrt to ipolicy disk templates
  ClusterSetParams: move vg-name checks from to CheckPrereq
  man gnt-cluster: mention ipolicy check
  Update NEWS file regarding ipolicy checks
  gnt-group add/modify: ipolicy vs disk templates
  Move Ipolicy utility function to cmdlib/common.py
  bootstrap: restrict ipolicy to enabled disk templates
  gnt-cluster modify: ipolicy vs enabled disk templates
  gnt-cluster modify: factor out ipolicy check

Conflicts:
    lib/cmdlib/group.py (due to moved function, changes already in
                         master)

Signed-off-by: Thomas Thrainer <thomasth@google.com>
Reviewed-by: Michele Tartara <mtartara@google.com>