LU-6043 lnet: Fix YAML FSM and other cleanup

LU-6043 lnet: Fix YAML FSM and other cleanup

1. Fixed the FSM to be able to parse lnetctl YAML output properly
2. Don't print out elements which are not configured
3. Minor static analysis cleanup (LU-6021)

Signed-off-by: Amir Shehata <amir.shehata@intel.com>
Change-Id: I0e7812775a3c718882f0845c71ac7fb2fa46d1b0
Reviewed-on: http://review.whamcloud.com/13115
Tested-by: Jenkins
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>