LU-1526 tests: new sanity-quota tests

LU-1526 tests: new sanity-quota tests

This patch is ported from commit d6f2a9f to add new sanity-quota.sh
for the interoprability testing with new quota architecture,
meanwhile, the old sanity-quota.sh is reserved for the interoprability
with old server.

The patch also contains the fixups for LU-2174, LU-2283, LU-2284
and LU-2329.

Test-Parameters: envdefinitions=SLOW=yes,ENABLE_QUOTA=yes testlist=conf-sanity,sanity-quota
Signed-off-by: Niu Yawei <niu@whamcloud.com>
Signed-off-by: Yu Jian <yujian@whamcloud.com>
Change-Id: I334890a4c7a233311e8f4075a8bf8dd904563525
Reviewed-on: http://review.whamcloud.com/4767
Tested-by: Hudson
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>