review maxConsecHoles : possibly reduce below 2

[slava77]

all CKF iterations (at least the pixel-based) require max consecutive holes of 1, while we have 2 (except in pixelLess or tobTec).
Apparently mkFIt choice goes back to the days before the dead modules were detected.

This issue is to suggest to investigate if going to 1 is feasible, at least in some of the iterations where fakes/combinatorics is significant.