Re-enable integration test for configure_index (#289)

## Problem

We temporarily disabled this integration test earlier after reporting a
bug to the backend team. Now we can bring it back.

## Solution

Enable test. 

## Type of Change

- [x] Infrastructure change (CI configs, etc)

tests/integration/control/test_configure_pod_index.py

@@ -1,8 +1,7 @@
 import pytest
 import time
 
-@pytest.mark.skip(reason='API bug reported')
-class TestCreatePodIndex():
-    def test_create_pod_index(self, client, ready_pod_index):
+class TestConfigurePodIndex():
+    def test_configure_pod_index(self, client, ready_pod_index):
         time.sleep(30) # Wait a little more, just in case.
         client.configure_index(ready_pod_index, replicas=1, pod_type='p1.x1')