Convert VPCDHCPOptionsAssociation to not have __init__
Convert VPCDHCPOptionsAssociation to not have __init__

This is inline with the big change in the last pull request. Nice commit
message huh?

WeAreCloudar/troposphere,micahhausler/troposphere,ptoraskar/troposphere,ccortezb/troposphere,cloudtools/troposphere,wangqiang8511/troposphere,unravelin/troposphere,horacio3/troposphere,craigbruce/troposphere,7digital/troposphere,dmm92/troposphere,alonsodomin/troposphere,johnctitus/troposphere,samcrang/troposphere,pas256/troposphere,inetCatapult/troposphere,garnaat/troposphere,xxxVxxx/troposphere,DualSpark/troposphere,johnctitus/troposphere,cloudtools/troposphere,mhahn/troposphere,yxd-hde/troposphere,kid/troposphere,horacio3/troposphere,Yipit/troposphere,jdc0589/troposphere,alonsodomin/troposphere,pas256/troposphere,LouTheBrew/troposphere,mannytoledo/troposphere,iblazevic/troposphere,ikben/troposphere,dmm92/troposphere,jantman/troposphere,ikben/troposphere,amosshapira/troposphere,nicolaka/troposphere,cryptickp/troposphere,7digital/troposphere,Hons/troposphere