elasticsearch/elasticsearch — pull request #7482 by spinscale (2014-08-27 12:55:24+00:00)
Title: Test: Allow global test cluster to have configurable settings source

This allows to reuse the global test cluster with specific configurations,
which is useful in plugins.

Allows to change this in plugin tests like this:

```
public class FooTest extends ElasticsearchIntegrationTest {

static {
InternalTestCluster.CONFIGURABLE_SETTINGS_SOURCE = new SettingsSource() { ... };
}

@Test
public void foo() { ... }
```