Add more falco alerts?

[davidumea]

What should be investigated.

See if there are any falco alerts that are worth adding after completing all falco/falco-exporter improvement issues. (#807, #1017, (maybe #898))

Hint: https://github.com/elastisys/compliantkubernetes-apps/pull/1032#discussion_r888742204

What artifacts should this produce.

A result that shows which (if any) alerts should be added.