Add missing Keycloak url in GitOps demo

Author: lbroudoux

gitops-demo/base/microcks-instance.yaml

@@ -10,4 +10,5 @@ spec:
       - name: KEYCLOAK_ENABLED
         value: "false"
   keycloak:
-    install: false
+    install: false
+    url: keycloak.m.minikube.local