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 from the client to the MDS.

Signed-off-by: James Nunez <james.a.nunez@intel.com>
Change-Id: I83b0b5b99deec376f4ee2d59e30810373e330174
Reviewed-on: http://review.whamcloud.com/8346
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: Andreas Dilger <andreas.dilger@intel.com>