LU-5969 procfs: restore missing newline for version param

In obd_proc_version_seq_show() restore the missing newline at the end
of the version param value.

Test-Parameters: trivial

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I7f8eecc418ceb3191650d7dfba8d1e2545af631b
Reviewed-on: http://review.whamcloud.com/20809
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Frank Zago <fzago@cray.com>
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>