fix test

Author: shubha-rajan

core/src/test/java/com/google/cloud/sql/core/CloudSqlInstanceTest.java

@@ -28,6 +28,7 @@
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
 
 @RunWith(JUnit4.class)
 public class CloudSqlInstanceTest {
@@ -43,7 +44,9 @@ public class CloudSqlInstanceTest {
 
  @Before
  public void setup() throws IOException {
- when(googleCredentials.createScoped()).thenReturn(scopedCredentials);
+ MockitoAnnotations.openMocks(this);
+ when(googleCredentials.createScoped(
+ "https://www.googleapis.com/auth/sqlservice.login")).thenReturn(scopedCredentials);
  }
 
  @Test