Installer files adapted for Release EIGHT and docker tag 8

Change-Id: Ie01d2ede53a0bce7a8c468a5fada65169fe7c7e7
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/charm/ro-k8s/config.yaml b/installers/charm/ro-k8s/config.yaml
index c35d114..a18e495 100755
--- a/installers/charm/ro-k8s/config.yaml
+++ b/installers/charm/ro-k8s/config.yaml
@@ -31,4 +31,4 @@
   image:
     type: string
     description: OCI image
-    default: opensourcemano/ro:7
+    default: opensourcemano/ro:8