LU-6162 kernel: kernel update RHEL6.6 [2.6.32-504.8.1.el6]

LU-6162 kernel: kernel update RHEL6.6 [2.6.32-504.8.1.el6]

Update RHEL6.6 kernel to 2.6.32-504.8.1.el6

Test-Parameters: clientdistro=el6.6 mdsdistro=el6.6\
  ossdistro=el6.6 mdsfilesystemtype=ldiskfs\
  mdtfilesystemtype=ldiskfs ostfilesystemtype=ldiskfs

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Change-Id: If1bf2bca5f70e305be4859d8f5f196b3574abed3
Reviewed-on: http://review.whamcloud.com/13560
Tested-by: Jenkins
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>