server: disable unauthenticated integration.api.port by default (#3504)

Set integration.api.port to (0) zero as default. CloudStack provides CloudStack API Unauthenticated Access through port 8096. It should not be open to the Internet in any case.

Author: Gabriel Beims Bräscher

server/src/main/java/com/cloud/api/ApiServer.java

@@ -228,8 +228,8 @@ public class ApiServer extends ManagerBase implements HttpRequestHandler, ApiSer
     private static final ConfigKey<Integer> IntegrationAPIPort = new ConfigKey<Integer>("Advanced"
             , Integer.class
             , "integration.api.port"
-            , "8096"
-            , "Default API port"
+            , "0"
+            , "Integration (unauthenticated) API port. To disable set it to 0 or negative."
             , false
             , ConfigKey.Scope.Global);
     private static final ConfigKey<Long> ConcurrentSnapshotsThresholdPerHost = new ConfigKey<Long>("Advanced"