LU-3879 test: Check for e2fsprogs on server

LU-3879 test: Check for e2fsprogs on server

sanity-quota checks if e2fsprogs is loaded on the client,
but should be checking for e2fsprogs on the server. This
patch changes checking for dumpe2fs on the client to
checking on the MDS.

Signed-off-by: James Nunez <james.a.nunez@intel.com>
Change-Id: I85d3b71dedb6e33775c7823b11f18c7ca405e858
Reviewed-on: http://review.whamcloud.com/8350
Tested-by: Jenkins
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>