Title: brocade_fcport/brocade_info: Only try to discover these services when device provides correct info
Level: 1
Component: checks
Class: fix
Compatible: compat
State: unknown
Version: 1.2.7i1
Date: 1418828693

The brocade_fcport and brocade_info checks were discovered on some devices which do not
provide the needed information. Improved the scan function to prevent this issue.
