cisearch: Allow user to ignore FID components

Allow the user to specify a 0 FID component to ignore that part of the
FID. This makes it easier to search for a FID regardless of cell, or
regardless of volume, etc.

Change-Id: I9e22a5a60647d784171c0905faaa31e421bfa4e9
Merge pull request #1 from adeason/cisearch-fid

cisearch: Allow user to ignore FID components