- add a travis build check
- switch app and service to serilog
- update to iiot libs 2.0
- bump up app service to .net core 2.2
- bump up most nuget dependencies
-The private key is now only stored in Key Vault. Key generation is back to service, as it slows down operation quite a bit and enforces delete rights for an Approver.
-Fix the docker builds and according build settings
-Other improvements: Use only a single CosmosDB collection (cost)
-license update
-CA certs can contain a CRL distribution point (however service side doesn't support it)