add integration tests for all capabilities in GH Actions

[Mossaka]

This will also involve adding repository secrets for all capabilities that require secrets accessible through envvars.

• [x] #114
• [ ] #115
• [x] #185

[Mossaka]

the most recent GH action took 16 mins to finish building the repo. Wondering if we can make it faster by adding cache to it?

[danbugs]

~re-enable aws tests, and Kafka.