xfstests: filter selinux output in _acl_ls etc

When selinux is on, ls -l gives us a "." to indicate selinux
attrs, which breaks some tests:

 === Test minimal ACE ===
 Setup file
--rwxrw-r-- id1 id2 file1
+-rwxrw-r--. id1 id2 file1

so make an _ls_l helper to filter that out.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>

common.attr

@@ -58,7 +58,7 @@ _acl_filter_id()
 #
 _acl_ls()
 {
-    ls -ln $* | awk '{ print $1, $3, $4, $NF }' | _acl_filter_id
+    _ls_l -n $* | awk '{ print $1, $3, $4, $NF }' | _acl_filter_id
 } 
 
 #