hack/validate/deprecate-integration-cli: add integration-cli/*_api_*.go
The intent of this check is to not add integration tests that use the
CLI to test API functionality, so check for changes in "API" tests as
well, now that the `integration/` suite has matured enough to develop
new tests, or migrate existing ones.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>