This one aims to resolve#15604
Created some table tests for the main cases -
also preferred to create two isolated cases for the most complicated
cases in order to keep table tests simple enough.
Give us full coverage on the middleware logic, for both optional and non
optional cases - PSK and ProvisionerKey.
* chore: merge authorization contexts
Instead of 2 auth contexts from apikey and dbauthz, merge them to
just use dbauthz. It is annoying to have two.
* fixup authorization reference
