Clears recorded events during espresso test

Author: Josh Deffibaugh

test-app/src/androidTest/java/com/optimizely/ab/android/test_app/MainActivityEspressoTest.java

@@ -119,6 +119,7 @@ protected void after() {
                     serviceScheduler.unschedule(dataFileServiceIntent);
                     assertFalse(serviceScheduler.isScheduled(dataFileServiceIntent));
                     assertFalse(serviceScheduler.isScheduled(eventIntentService));
+                    CountingIdlingResourceManager.clearEvents();
                 }
             })
             .around(activityTestRule);