Fix ordering and dependency issues in bidder interface and exchange connector tests (RTBKIT-571)
Fix shutdown ordering issues in bidder interface (RTBKIT-572)
More info in agent context switch test (NOPROD,TRIVIAL)
merged master
Merge branch 'master' of github.com:datacratic/rtbkit into RTBKIT-528_bidding_agent_context_switches
Add shutdown() method to HttpBidderInterface; make it virtual (RTBKIT-572)
merged master (TRIVIAL)
Merge pull request #45 from datacratic/RTBKIT-571_bidder_interface_build_order

RTBKIT-571 bidder interface build order