Moving keystore2_client_tests to presubmit.

Along with this change, we are making a change to disable running
it on R and S builds - https://critique.corp.google.com/cl/673010199

Bug: 363217776
Test: Run keystore2_client_tests
Change-Id: I5b8ae71bb48033ed07d81ddb024484e7489fadc9
1 file changed