remove orientation from stp class
update backend to new callback/notification scheme and start updating code and tests
remove old sub connection class from aggregator
add states to sub connection in database schema
add replyto field and string representation of nsi header
fix singlevalue method of label and print stps properly in serviceparamteres
start overhauling backend to new event architecture
add common test module
remove stp orientation from topology module and test
remove stp orientation usage from cli command module
start architecture overhaul on aggregator, still lots be done, nothing works right now
start updating nsi2 protocol stack to new architecture
update cli command to do reserve commit in reserve
update setup to new apis