LU-11168 kernel: kernel update RHEL6.10 [2.6.32-754.2.1.el6]

LU-11168 kernel: kernel update RHEL6.10 [2.6.32-754.2.1.el6]

Update RHEL6.10 kernel to 2.6.32-754.2.1.el6 for Lustre client.

Test-Parameters: clientdistro=el6.10

Change-Id: I7379565713adfd5ae2c8ee604c7838d6e6aba086
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/32936
Tested-by: Jenkins
Reviewed-by: Minh Diep <mdiep@whamcloud.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>