generic: honor the FSSTRESS_AVOID environment variable

Make sure all tests which run fsstress, and which do not have a very
specific custom profile of which file system operations to run, honor
the FSSTRESS_AVOID environment variable.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
3 files changed