Features 11017 and 11018: setup of mgmt cluster and git repo

This change incorporates the changes to setup a mgmt cluster for
cloud-native operations in OSM following a GitOps model, which includes
the setup of an internal git repository.

Change-Id: If828d18ad64d852a9a89ec9ba7c2d3a96d281565
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/install_kubeadm_cluster.sh b/installers/install_kubeadm_cluster.sh
index 1a4aedf..be97814 100755
--- a/installers/install_kubeadm_cluster.sh
+++ b/installers/install_kubeadm_cluster.sh
@@ -189,6 +189,7 @@
 
 install_k8s_metrics
 
+# Clean existing namespace (idempotent installation)
 remove_k8s_namespace osm
 
 # install_helm has been moved to install_helm_client.sh, run from full_install_osm.sh,