convert converage_mapper to use replace helper function
convert converage_mapper to use replace helper function

CosminNiculae/fMBT,pombreda/fMBT,mlq/fMBT,pablovirolainen/fMBT,acozzette/fMBT,pombreda/fMBT,mixu-/fMBT,heivi/fMBT,mlq/fMBT,mlq/fMBT,pombreda/fMBT,giantpinkwalrus/fMBT,pombreda/fMBT,CosminNiculae/fMBT,mixu-/fMBT,pablovirolainen/fMBT,acozzette/fMBT,OMKR/fMBT,pablovirolainen/fMBT,01org/fMBT,acozzette/fMBT,yoonkiss/fMBT,heivi/fMBT,pyykkis/fMBT,heivi/fMBT,CosminNiculae/fMBT,giantpinkwalrus/fMBT,OMKR/fMBT,pyykkis/fMBT,mlq/fMBT,giantpinkwalrus/fMBT,rseymour/fMBT,OMKR/fMBT,mixu-/fMBT,yoonkiss/fMBT,heivi/fMBT,pablovirolainen/fMBT,01org/fMBT,pyykkis/fMBT,violep01/fMBT,mixu-/fMBT,rseymour/fMBT,CosminNiculae/fMBT,giantpinkwalrus/fMBT,pombreda/fMBT,pyykkis/fMBT,pyykkis/fMBT,pablovirolainen/fMBT,CosminNiculae/fMBT,acozzette/fMBT,01org/fMBT,mlq/fMBT,pombreda/fMBT,rseymour/fMBT,acozzette/fMBT,violep01/fMBT,violep01/fMBT,violep01/fMBT,yoonkiss/fMBT,violep01/fMBT,mlq/fMBT,rseymour/fMBT,01org/fMBT,01org/fMBT,pyykkis/fMBT,mixu-/fMBT,yoonkiss/fMBT,mlq/fMBT,rseymour/fMBT,pablovirolainen/fMBT,OMKR/fMBT,rseymour/fMBT,rseymour/fMBT,heivi/fMBT,CosminNiculae/fMBT,yoonkiss/fMBT,OMKR/fMBT,giantpinkwalrus/fMBT,pombreda/fMBT,heivi/fMBT,heivi/fMBT,OMKR/fMBT,CosminNiculae/fMBT