TF: Update staging server to use one of the slaves

Change-Id: I7d0a5f0c8c97307e388d6219f8cf67c930bb0e8c
diff --git a/hosts b/hosts
index 4684fc5..a7000ae 100644
--- a/hosts
+++ b/hosts
@@ -1,10 +1,11 @@
 ---
 # List of YADP Hosts
 
-- x86_64-TF-01:
-  cloud_name: x86_64-TF-01
-  docker_url: tcp://148.251.195.69:2375
+- x86_64-TF-02:
+  cloud_name: x86_64-TF-02
+  docker_url: tcp://51.159.20.54:2375
   host_credentials_id: docker-access
-  max_containers: 50 # equals the amount of nodes we have in the swarm
+  max_containers: 50
   docker_templates: !include docker_templates_amd64.yml
 
+