implement new block notification
implement new block notification

tuand27613/obc-peer,noamher/obc-peer,jjjjibm/fabric,bren3582/fabric,bburgdave/fabric,popldo/fabric,gongsu832/fabric,angrbrd/fabric,murali-katipalli-dtcc/fabric,isghe/obc-peer,adecaro/fabric,hyperledger-archives/fabric,isghe/obc-peer,ariccy/fabric,murali-katipalli-dtcc/fabric,adecaro/fabric,andresgaragiola/fabric,gongsu832/fabric,murali-katipalli-dtcc/fabric,JonathanLevi/fabric,ahuachen/fabric,JonathanLevi/fabric,gromeroar/fabric,ahuachen/fabric,murali-katipalli-dtcc/fabric,srderson/fabric,openblockchain/obc-peer,gennadylaventman/fabric,binhn/obc-peer,adecaro/fabric,ghaskins/obc-peer,bburgdave/fabric,ghaskins/obc-peer,ariccy/fabric,binhn/obc-peer,ahuachen/fabric,jjjjibm/fabric,murali-katipalli-dtcc/fabric,srderson/fabric,hyperledger-archives/fabric,ahuachen/fabric,gongsu832/obc-peer,angrbrd/fabric,angrbrd/fabric,tuand27613/obc-peer,bren3582/fabric,sumanair/obc-peer,srderson/fabric,ariccy/fabric,angrbrd/fabric,tuand27613/fabric,hyperledger-archives/fabric,ahuachen/fabric,adecaro/fabric,bren3582/fabric,itp4IBM/fabric,binhn/obc-peer,popldo/fabric,tuand27613/fabric,JonathanLevi/fabric,tuand27613/fabric,openblockchain/obc-peer,noamher/obc-peer,bren3582/fabric,gromeroar/fabric,isghe/obc-peer,itp4IBM/fabric,gromeroar/fabric,ghaskins/obc-peer,ariccy/fabric,tenc/obc-peer-pre-public,adecaro/fabric,andresgaragiola/fabric,andresgaragiola/fabric,itp4IBM/fabric,adecaro/fabric,itp4IBM/fabric,rameshthoomu/obc-peer,JonathanLevi/fabric,rameshthoomu/obc-peer,popldo/fabric,tenc/obc-peer-pre-public,bren3582/fabric,angrbrd/fabric,popldo/fabric,andresgaragiola/fabric,murali-katipalli-dtcc/fabric,jjjjibm/fabric,sumanair/obc-peer,srderson/fabric,gennadylaventman/fabric,hyperledger-archives/fabric,ariccy/fabric,isghe/obc-peer,gennadylaventman/fabric,tuand27613/obc-peer,sumanair/obc-peer,gongsu832/obc-peer,tuand27613/fabric,bburgdave/fabric,gromeroar/fabric,andresgaragiola/fabric,angrbrd/fabric,JonathanLevi/fabric,popldo/fabric,popldo/fabric,jjjjibm/fabric,tenc/obc-peer-pre-public,adecaro/fabric,andresgaragiola/fabric,murali-katipalli-dtcc/fabric,srderson/fabric,tuand27613/fabric,hyperledger-archives/fabric,itp4IBM/fabric,ahuachen/fabric,bren3582/fabric,tuand27613/fabric,openblockchain/obc-peer,gennadylaventman/fabric,srderson/fabric,JonathanLevi/fabric,jjjjibm/fabric,itp4IBM/fabric,srderson/fabric,isghe/obc-peer,tuand27613/fabric,ariccy/fabric,gongsu832/fabric,tenc/obc-peer-pre-public,gennadylaventman/fabric,jjjjibm/fabric,bren3582/fabric,jjjjibm/fabric,gennadylaventman/fabric,hyperledger-archives/fabric,gromeroar/fabric,ahuachen/fabric,hyperledger-archives/fabric,gromeroar/fabric,bburgdave/fabric,itp4IBM/fabric,ghaskins/obc-peer,gongsu832/fabric,popldo/fabric,noamher/obc-peer,gennadylaventman/fabric,gongsu832/obc-peer,gromeroar/fabric,andresgaragiola/fabric,angrbrd/fabric,ariccy/fabric,rameshthoomu/obc-peer,JonathanLevi/fabric,bburgdave/fabric