LU-3378 kernel: Kernel update [RHEL5.9 2.6.18-348.6.1.el5]

Update RHEL 5.9 patch to 2.6.18-348.6.1.el5.

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Change-Id: I5d75972265c22fae3410106ca443c1a1fb4d9466
Reviewed-on: http://review.whamcloud.com/6439
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>