fstests: update group name according to xfs_io command requirement

fstests: update group name according to xfs_io command requirement

When a test case requires someone xfs_io command, that nearly means
that case belong that kind of test group. Likes fpunch for punch
group, fcollapse for collapse group, falloc for prealloc group, fzero
for zero group and so on.

Many fstests cases miss some test groups they should belong to, so
this patch trys to supplement this lack,  according to the "xxxx"
which required by _require_xfs_io_command "xxxx".

Reported-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Zorro Lang <zlang@kernel.org>
Reviewed-by: Andrey Albershteyn <aalbersh@redhat.com>