LU-7608 kernel: kernel upgrade [SLES12 SP1 3.12.51-60.25]

LU-7608 kernel: kernel upgrade [SLES12 SP1 3.12.51-60.25]

change supported version from base SLES12 to SLES12 SP1
Update target file for new version
Add kernel config for server build
Revise one of the ldiskfs patches for sles12,
as the rhel7 version it was sharing no longer applies.
Revise lbuild for sles12 server builds.

Test-Parameters: clientdistro=sles12 testgroup=review-ldiskfs \
  mdsdistro=sles12 ossdistro=sles12 mdsfilesystemtype=ldiskfs \
  mdtfilesystemtype=ldiskfs ostfilesystemtype=ldiskfs

Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Change-Id: I72a6964615356a2dfa0a9b4dae49a9457ed617b0
Reviewed-on: http://review.whamcloud.com/17857
Tested-by: Jenkins
Reviewed-by: Yang Sheng <yang.sheng@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>