tasks/ceph_manager: enable log for ceph_objectstore_tool

Signed-off-by: Sage Weil <sage@redhat.com>
Merge pull request #168 from ceph/wip-objectstore-log

log ceph_objectstore_tool output
ceph.py: in scrub, wait 30s for pg map to catch up

Signed-off-by: Samuel Just <sam.just@inktank.com>
Merge remote-tracking branches 'origin/wip-sam-misc' and 'origin/wip-snaps' into wip-sam-testing