LU-7174 build: make git ignore dkms generated file

LU-7174 build: make git ignore dkms generated file

While testing patches other non-patch the related build
by product dkms.mkconf show up with git status. To avoid
adding this by accident place thes by product files in the
proper .gitignore files.

Change-Id: I49a5411f8c1159a75d1cd28067dfbf3c2a677d6c
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: http://review.whamcloud.com/17136
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>