Upgrade to ehcache 2.4.5.
Upgrade to ehcache 2.4.5.

unitsofmeasurement/metrics,jplock/metrics,chenxianghua2014/metrics,bentatham/metrics,AltitudeDigital/metrics,gorzell/metrics,mattnelson/metrics,ind9/metrics,gburton1/metrics,mt0803/metrics,Banno/metrics,erikvanoosten/metrics-scala,dropwizard/metrics,slachiewicz/metrics,cirrus-dev/metrics,mtakaki/metrics,box/metrics,dropwizard/metrics,thelastpickle/metrics,wickedshimmy/metrics-scala,randomstatistic/metrics,gorzell/metrics,fcrepo4-archive/metrics,box/metrics,fcrepo4-archive/metrics,ohr/metrics,mveitas/metrics,infusionsoft/yammer-metrics,egymgmbh/metrics,kevintvh/metrics,mnuessler/metrics,maciej/metrics-scala,dropwizard/metrics,infusionsoft/yammer-metrics,gorzell/metrics,mspiegel/metrics,valery1707/dropwizard-metrics,gburton1/metrics,slovdahl/metrics,rexren/metrics,scullxbones/metrics-scala,timezra/metrics,ChetnaChaudhari/metrics,mveitas/metrics,tempredirect/metrics,jasw/metrics,wfxiang08/metrics,signalfx/metrics