qa/tasks/ceph.py: move methods from teuthology.git into ceph.py directly; support...

qa/tasks/ceph.py: move methods from teuthology.git into ceph.py directly; support mon bind * options

Having these live in teuthology.git is silly, since they are only consumed
by the ceph task, and it is hard to revise the behavior.

Revise the behavior by adding mon_bind_* options.

Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit 1ab352dd3105d320bd7ad2c0b37e5de750879dd5)

Conflicts:
    qa/tasks/ceph.py
- the nautilus version of "get_mons()" includes msgr V2 code which is not needed
  in mimic