Eghlt5x5 ss

This is a small change which relies on  https://github.com/cms-sw/cmssw/pull/3545 which has not yet been merged yet. It allows the sigmaiEtaiEta variable using 5x5 no fractions using the new LazyClusterTools to be availible at the HLT. It changes nothing to the user, just adds another variable which is available if the user needs it. Tested on a limited HLT menu to exercise this module in pre7.  This would be aiming for pre8.