LU-6824 ldiskfs: add dir htree growing warning patch

LU-6824 ldiskfs: add dir htree growing warning patch

RHEL 7.2 and SLES 12 were supported after landing commit
07660ad33a7d109cced29b6400f99f25adab3f54. This patch adds
the missing ext4-give-warning-with-dir-htree-growing.patch
into the series files for both distros.

Signed-off-by: Jian Yu <jian.yu@intel.com>
Change-Id: I40b4d34de467bc933dd43e175d78e37f59d91b16
Reviewed-on: http://review.whamcloud.com/18169
Tested-by: Jenkins
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>