Set supported-api-version to 164 (#1139)

Author: pivotal-david-osullivan

cloudfoundry-client/src/main/java/org/cloudfoundry/client/CloudFoundryClient.java

@@ -79,7 +79,7 @@ public interface CloudFoundryClient {
     /**
      * The currently supported Cloud Controller API version
      */
-    String SUPPORTED_API_VERSION = "2.171.0";
+    String SUPPORTED_API_VERSION = "2.164.0";
 
     /**
      * Main entry point to the Cloud Foundry Application Usage Events Client API