LU-2049 tests: Add GRANT_CHECK_LIST to sanity

LU-2049 tests: Add GRANT_CHECK_LIST to sanity

Test GRANT_CHECK_LIST across a selection of sanity.

Fix check_grant() to account for grant precreate and grant pending and
subtract it from total grant on OSTs.

Test-Parameters: trivial osscount=2 mdscount=2 mdtcount=1 ostcount=2 mdtfilesystemtype=zfs ostfilesystemtype=zfs testlist=sanity
Signed-off-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Change-Id: I05b9f994033e8edf92bf30a17f74f2a0f6bee462
Reviewed-on: https://review.whamcloud.com/21619
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>