Add test suites to postsubmit.

These tests were previously part of the presubmit, but are now skipped
as they have been moved to their own test suites.
Following the process documented at go/test-mapping-slo-guide#how-to-add-a-test-as-part-of-the-test-mapping-presubmit

Test: presubmit
Bug: 308630134
Change-Id: I444ad989bdc0dea928c0b097729f348121550c56