inititialize the last_prepare_decree_on_new_primary when assign primary
inititialize the last_prepare_decree_on_new_primary when assign primary

imzhenyu/rDSN,lshmouse/rDSN,imzhenyu/rDSN,glglwty/rDSN,lshmouse/rDSN,qinzuoyan/rDSN,imzhenyu/rDSN,Microsoft/rDSN,imzhenyu/rDSN,ykwd/rDSN,Microsoft/rDSN,imzhenyu/rDSN,Microsoft/rDSN,ykwd/rDSN,mcfatealan/rDSN,shengofsun/rDSN,goksyli/rDSN,lshmouse/rDSN,pandaworrior/rDSN,qinzuoyan/rDSN,shengofsun/rDSN,lshmouse/rDSN,shengofsun/rDSN,glglwty/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,lshmouse/rDSN,imzhenyu/rDSN,goksyli/rDSN,ykwd/rDSN,lshmouse/rDSN,mcfatealan/rDSN,pandaworrior/rDSN,shengofsun/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,ykwd/rDSN,mcfatealan/rDSN,shengofsun/rDSN,imzhenyu/rDSN,shengofsun/rDSN,qinzuoyan/rDSN,pandaworrior/rDSN,Microsoft/rDSN,glglwty/rDSN,goksyli/rDSN,pandaworrior/rDSN,lshmouse/rDSN,lshmouse/rDSN,ykwd/rDSN,goksyli/rDSN,qinzuoyan/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,pandaworrior/rDSN,mcfatealan/rDSN,glglwty/rDSN,qinzuoyan/rDSN,shengofsun/rDSN,Microsoft/rDSN,glglwty/rDSN,shengofsun/rDSN