LU-3319 lprocfs: client side cleanups

LU-3319 lprocfs: client side cleanups

Now that all the client side seq_file patches it is
time to handle the issue that people pointed out but
were not severe enough to prevent landing. This patch
addresses all the concerns as well and move all struct
lprocfs_seq_var to be initialized C99 style.

Change-Id: I89e8b719bd067ecf4e3cab481a2d4c62d5052af0
Signed-off-by: James Simmons <uja.ornl@gmail.com>
Reviewed-on: http://review.whamcloud.com/8943
Tested-by: Jenkins
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Peng Tao <bergwolf@gmail.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>