k8s: Add post-up message for actual cluster creation

Issue-ID: SECCOM-235
Change-Id: I8f9d4362da50a8b3f2aa1baf3633d818da2ed3a5
Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>
diff --git a/test/security/k8s/vagrant/dublin/Vagrantfile b/test/security/k8s/vagrant/dublin/Vagrantfile
index 8870580..ef4d42b 100644
--- a/test/security/k8s/vagrant/dublin/Vagrantfile
+++ b/test/security/k8s/vagrant/dublin/Vagrantfile
@@ -21,6 +21,8 @@
 
 all = cluster.dup << operation
 
+operation_post_msg = "Run: \"vagrant provision #{operation[:name]} --provision-with=rke_up\" to complete cluster creation"
+
 $replace_dns = <<-SCRIPT
   HOST_IP="$1"
   rm -f /etc/resolv.conf # drop its dynamic management by systemd-resolved
@@ -140,6 +142,8 @@
           s.inline = $link_cluster_yml
           s.args = [synced_folder_main, cluster_yml]
         end
+
+        config.vm.post_up_message = operation_post_msg
         config.vm.provision "rke_up", type: :shell, run: "never", privileged: false, inline: $rke_up
       end
     end