Fix 1527 for v9.0

Manual cherry pick of c395a45 to swtich from defunct xip.io to nip.io

Fixes bug 1527 in v9.0

Change-Id: I56ba9ef730a3b5ca6be4994cf7270605453fa459
Signed-off-by: beierlm <mark.beierl@canonical.com>
diff --git a/installers/charm/ng-ui/README.md b/installers/charm/ng-ui/README.md
index 9b77b5d..2cb8cf5 100644
--- a/installers/charm/ng-ui/README.md
+++ b/installers/charm/ng-ui/README.md
@@ -24,7 +24,7 @@
 ## How to expose the NG-UI through ingress
 
 ```bash
-juju config ng-ui site_url=ng.<k8s_worker_ip>.xip.io
+juju config ng-ui site_url=ng.<k8s_worker_ip>.nip.io
 juju expose ng-ui
 ```
 
diff --git a/installers/charmed_install.sh b/installers/charmed_install.sh
index e215ef2..c2b678b 100755
--- a/installers/charmed_install.sh
+++ b/installers/charmed_install.sh
@@ -271,16 +271,16 @@
 
     # Expose OSM services
     # Expose NBI
-    juju config -m $MODEL_NAME nbi site_url=https://nbi.${API_SERVER}.xip.io
-    juju config -m $MODEL_NAME ng-ui site_url=https://ui.${API_SERVER}.xip.io
+    juju config -m $MODEL_NAME nbi site_url=https://nbi.${API_SERVER}.nip.io
+    juju config -m $MODEL_NAME ng-ui site_url=https://ui.${API_SERVER}.nip.io
 
     # Expose Grafana
-    juju config -m $MODEL_NAME grafana-k8s juju-external-hostname=grafana.${API_SERVER}.xip.io
+    juju config -m $MODEL_NAME grafana-k8s juju-external-hostname=grafana.${API_SERVER}.nip.io
     juju expose -m $MODEL_NAME grafana-k8s
     wait_for_port grafana-k8s 0
 
     # Expose Prometheus
-    juju config -m $MODEL_NAME prometheus-k8s juju-external-hostname=prometheus.${API_SERVER}.xip.io
+    juju config -m $MODEL_NAME prometheus-k8s juju-external-hostname=prometheus.${API_SERVER}.nip.io
     juju expose -m $MODEL_NAME prometheus-k8s
     wait_for_port prometheus-k8s 1