fstests: add punch, collapse, insert, zero test groups

Define test groups for those tests which have _require_xfs_io_command
for punch, collapse, insert, and zero.  This makes it easier to
exclude tests that use one of these fallocate commands.  Or if you
want to specifically test for those fallocate commands you can do
this.

This obviates an out-of-tree xfstests patch I maintain which used an
XFS_IO_AVOID environment variable to suppress running tests that use
punch, collapse, insert, etc.  This was rejected because of the
claim that it could be done using groups.  So this commit is in
response to those upstream comments.

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

tests/btrfs/group

@@ -110,7 +110,7 @@
 105 auto quick send
 106 auto quick clone compress
 107 auto quick prealloc
-108 auto quick send clone
+108 auto quick send clone punch
 109 auto quick send clone compress
 110 auto quick send
 111 auto quick send