init-ceph: do not stop start on first failure

When starting we often loop over many daemon instances.  Currently we stop
on the first error and do not try to start other daemons.

Instead, try them all, but return a failure if anything did not start.

Fixes: #2545
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Gary Lowell <gary.lowell@inktank.com>
(cherry picked from commit d395aa521e8a4b295ed2b08dd7cfb7d9f995fcf7)

Conflicts:

	src/init-ceph.in