LU-10940 tests: skip sanity test 802 when quota enabled

LU-10940 tests: skip sanity test 802 when quota enabled

If ENABLE_QUOTA is set, sanity test 802 will try to set
the quota type on read-only targets. Setting quota requires
changes to the targets and, thus, does not make sense for
this test. sanity test 802 should be skipped if ENABLE_QUOTA
is set.

Test-Parameters: trivial envdefinitions=ENABLE_QUOTA=yes,ONLY=802 testlist=sanity
Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: Ic9c245045961867b7dc93be9268e6f4a4631c1dc
Reviewed-on: https://review.whamcloud.com/32900
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Wei Liu <sarah@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>