marginal/osd_powercycle: restructure collection

Move install and ceph into the powercycle facet, so that it comes before
the osdthrasher.  Remove it from all of the tasks.

Signed-off-by: Sage Weil <sage@inktank.com>
marginal/multiclient: /tmp/cephtest -> $TESTDIR

Signed-off-by: Sage Weil <sage@inktank.com>
task for ceph-deploy sample run

Signed-off-by: tamil <tamil.muthamizhan@inktank.com>
fs: test traceless replies from mds

Signed-off-by: Sage Weil <sage@inktank.com>
regression: add fs/traceless

Signed-off-by: Sage Weil <sage@inktank.com>
marginal: fix mds thrasher tasks

Make the ceph cluster get installed and set up before we start thrashing
the mds.

Signed-off-by: Sage Weil <sage@inktank.com>
radosgw-admin: Adjust garbage collection settings.

Signed-off-by: caleb miles <caleb.miles@inktank.com>