LU-8227 kernel: kernel update RHEL6.8 [2.6.32-642.1.1.el6]

LU-8227 kernel: kernel update RHEL6.8 [2.6.32-642.1.1.el6]

Update RHEL6.8 kernel to 2.6.32-642.1.1.el6

Test-Parameters: clientdistro=el6.8 mdsdistro=el6.8 ossdistro=el6.8 \
  mdsfilesystemtype=ldiskfs mdtfilesystemtype=ldiskfs \
  ostfilesystemtype=ldiskfs testgroup=review-ldiskfs

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Change-Id: I33789db4827b36a25332e5d7e85729ac036d0a4b
Reviewed-on: http://review.whamcloud.com/20542
Tested-by: Jenkins
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>