feat: add jupyterhub role

- add nodejs module to use npm package provider
- add jupyterhub role
- add class to configure the jupyterhub instance
- add ldap groups
- add nginx simpleproxy

site/roles/manifests/apps/jupyter/hub.pp

@@ -0,0 +1,12 @@
+# jupyterhub server profile
+class roles::apps::jupyter::hub {
+  if $facts['firstrun'] {
+    include profiles::defaults
+    include profiles::firstrun::init
+  }else{
+    include profiles::defaults
+    include profiles::base
+    include profiles::base::datavol
+    include profiles::jupyter::jupyterhub
+  }
+}