LU-4423 lnet: Drop unnecessary wrapper function in lnetselftest console.c

LU-4423 lnet: Drop unnecessary wrapper function in lnetselftest console.c

Remove the function lstcon_group_put() and replace all its calls with the
function lstcon_group_decref() because the former function just
performs the job of calling the latter.

Linux-commit : 33db686a22e502ba127138912814e8468ac51ed6

Change-Id: Id12aee41286fd46beb5f96f09dcc50b7e636e93e
Signed-off-by: Shivani Bhardwaj <shivanib134@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: http://review.whamcloud.com/18951
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Frank Zago <fzago@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>