Revert "Changed zone"

This reverts commit ae0c86d.

Author: TetyanaYahodska

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

@@ -49,7 +49,7 @@
 public class CrudOperationsReservationIT {
 
   private static final String PROJECT_ID = System.getenv("GOOGLE_CLOUD_PROJECT");
-  private static final String ZONE = "us-east4-c";
+  private static final String ZONE = "us-west1-a";
   private static String RESERVATION_NAME;
   private static final int NUMBER_OF_VMS = 3;
   static String javaVersion = System.getProperty("java.version").substring(0, 2);