SW-695: Get the parset using getOTDBParset on scu001 to not depend on the messaging vs messagebus for RPC calls in docker.

SW-754: Do not write pycache files for station test, as it will be run as root and leave unmovable files for MAC_install

SW-699: added UsingToBusMixin, and (re)use that in all the ServiceMessageHandlers and some AbstractMessageHandler derivatives

SW-699: Use exchange,routing_key syntax for AbstractBusListener constructor, drop use of **kwargs, fix IngestEventHandler as it was still propagating subjects to listen for

SW-699: Make notifications unconfigurable, greatly reducing complexity of the higher abstraction layers.

SW-699: Use a single broker and bus (exchange), and make service names unconfigurable (fixed in Service and RPC). Greatly reduces configuration size.

ROHD-1729: uploadMetadata: use db credentials from config file. Properly install config files for this module in CMake.

SW-657: Python programs can be started as parameter to python/python2/python3. Let SoftwareMonitor recognise them properly

SW-693: Swap ToBus/FromBus broker/options parameters to make overriding broker easier (common) than overriding options (uncommon)