Add application ports when updating applications

[resolves #975]

Author: GFriedrich

cloudfoundry-client/src/main/java/org/cloudfoundry/client/v2/applications/_CreateApplicationRequest.java

@@ -155,7 +155,7 @@ abstract class _CreateApplicationRequest {
     abstract String getName();
 
     /**
-     * The ports on which application may listen
+     * The ports on which the application may listen
      */
     @JsonProperty("ports")
     @Nullable

cloudfoundry-client/src/main/java/org/cloudfoundry/client/v2/applications/_UpdateApplicationRequest.java

@@ -23,6 +23,7 @@
 import org.cloudfoundry.Nullable;
 import org.immutables.value.Value;
 
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -154,6 +155,13 @@ abstract class _UpdateApplicationRequest {
     @Nullable
     abstract String getName();
 
+    /**
+     * The ports on which the application may listen
+     */
+    @JsonProperty("ports")
+    @Nullable
+    abstract List<Integer> getPorts();
+
     /**
      * Whether the application is production
      */