tests: Pass acl, mfsacl mount flags where needed

Until now 'mfsacl' flag was set in every test, including the ones that
didn't need it. This patch fixes it. Moreover, after one of the recent
patches fuse now has 'acl' flag that has to be set when ACL support is
expected. This patch sets it in appropriate tests.

Change-Id: I940ab96649b1dffc2932e5db2093b85145c427f3