Fixed code

Author: TetyanaYahodska

compute/cloud-client/src/test/java/compute/reservation/ReservationIT.java

@@ -36,6 +36,7 @@
 import compute.CreateRegionalInstanceTemplate;
 import compute.DeleteInstanceTemplate;
 import compute.DeleteRegionalInstanceTemplate;
+import compute.Util;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.PrintStream;
@@ -93,6 +94,7 @@ public static void setUp()
     requireEnvVar("GOOGLE_CLOUD_PROJECT");
     stdOut = new ByteArrayOutputStream();
     System.setOut(new PrintStream(stdOut));
+    Util.cleanUpExistingReservations("test-reservation-", PROJECT_ID, ZONE);
 
     // Create instance template with GLOBAL location.
     CreateInstanceTemplate.createInstanceTemplate(PROJECT_ID, GLOBAL_INSTANCE_TEMPLATE_NAME);