move create of subconnection into seperate method in nsiservice
move create of subconnection into seperate method in nsiservice

NORDUnet/opennsa,jeroenh/OpenNSA,NORDUnet/opennsa,NORDUnet/opennsa,jab1982/opennsa,jeroenh/OpenNSA,jab1982/opennsa,jeroenh/OpenNSA