generic/68[3-7]: Add separate sgid stripping sub-tests

Like xfstests commit 298f60c ("generic/673: Add separate sgid stripping sub-tests"),
we should also add separate sgid stripping sub-tests for each fallocate operation.

Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>
10 files changed