LU-7230 llite: clear dir stripe md in ll_iget

LU-7230 llite: clear dir stripe md in ll_iget

If ll_iget fails during inode initialization, especially
during striped directory lookup after creation failed,
then it should clear stripe MD before make_bad_inode(),
because make_bad_inode() will reset the i_mode, which
can cause ll_clear_inode() skip freeing those stripe MD.

Remove the name entry from the directory, once creation
failed. Note: this will not rollback all of local
operation, and LFSCK will take care of the orphan object.

Add sanity.sh 300p to verify the case.

And also enable lfs rm_entry for local object as well,
because sometimes it is quite possible to create the
local corrupted striped directory, and we might need
use "lfs rm_entry" to delete the corrupted striped dir.

Signed-off-by: wang di <di.wang@intel.com>
Change-Id: I892c52117b83c8348aa0ceb888e73c84e79ffe46
Reviewed-on: http://review.whamcloud.com/16677
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>