LU-12203 tests: skip sanity-lfsck 36[b,c] for FILESET

LU-12203 tests: skip sanity-lfsck 36[b,c] for FILESET

When FILESET is set the tests accessing .lustre directly
are to be skipped.

Test-Parameters: trivial envdefinitions=FILESET=/subdir envdefinitions=ONLY="36" testlist=sanity-lfsck ostcount=4
Signed-off-by: Elena Gryaznova <c17455@cray.com>
Cray-bug-id: LUS-7175
Reviewed-by: Vladimir Saveliev <c17830@cray.com>
Reviewed-by: Vitaly Fertman <c17818@cray.com>
Change-Id: I7aa1ca40efdeebfb3ee52edc8d8758bb6ce73ad4
Reviewed-on: https://review.whamcloud.com/34722
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Nunez <jnunez@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>