./gradlew runApiTest doesn't run API tests

For example, calling `./gradlew runApiTestKcsbase` returns output:
```
:kcsbase:test UP-TO-DATE
:kcsbase:check UP-TO-DATE

BUILD SUCCESSFUL
```
Actually, API tests were modified and it should trigger the build.
`./gradlew checkApiBehaviourKcsbase` works as expected - tests are started when it's called.