LU-5845 build: add support for SUSE_LINUX-12 .spec file

LU-5845 build: add support for SUSE_LINUX-12 .spec file

Add the SLES 12 .spec file.
For now SLES 12 and SLES 11 can share the same .spec file.

  LU-8390 build: use correct .spec file for SLES 12

  Changes in output from the lsb_release command in SLES 12
  resulted in using the wrong .spec file in builds.
  This patch corrects the problem for old and new versions.

  Signed-off-by: Bob Glossman <bob.glossman@intel.com>
  Change-Id: I41d47c305eba7d3dd0d313be5ad8192592291fad
  Reviewed-on: http://review.whamcloud.com/21237
  Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
  Tested-by: Jenkins
  Tested-by: Maloo <hpdd-maloo@intel.com>
Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Change-Id: I3b716c09ea8632d2333aaf61b8a6c881ccd18a88
Reviewed-on: http://review.whamcloud.com/12316
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>