* Reapply "K8s: read resource configs from API Enablement for API Builders" (#114475)
This reverts commit 4130bd9cd3.
* revert part that broke things
* FF service changes are gonna come later
* MTFF: allow viewers access to MTFF by enforcing runtime_config for custom routes
* unused var
* removed now
* pass the test, include defaults
* revert sample.ini change
* Replace remaining calls to testing.Short where possible.
* Update style guide.
* Revert change in TestAlertmanager_ExtraDedupStage, as it doesn't work.
* Make TestAlertRulePostExport into integration test.
