puppet: Move minify-js and statsd dependencies to internal manifest.

(imported from commit 3363fb962a4fde575591b42db888b92bb6edd0f5)

puppet/zulip/manifests/app_frontend.pp

@@ -13,7 +13,6 @@ class zulip::app_frontend {
                     "python-django-jstemplate",
                     "python-django-guardian",
                     "python-django-auth-openid",
-                    "python-django-statsd-mozilla",
                     "python-django-south",
                     "python-django-pipeline",
                     "python-django-bitfield",
@@ -41,9 +40,6 @@ class zulip::app_frontend {
                     "python-pika",
                     # Needed for timezone work
                     "python-tz",
-                    # Needed for minify-js
-                    "yui-compressor",
-                    "nodejs",
                     # Needed to parse source maps for error reporting
                     "python-sourcemap",
                     # Needed for redis

puppet/zulip_internal/manifests/app_frontend.pp

@@ -0,0 +1,11 @@
+class zulip_internal::app_frontend {
+  include zulip::app_frontend
+  $app_packages = [# Needed for minify-js
+                   "yui-compressor",
+                   "nodejs",
+                   # Needed for statsd reporting
+                   "python-django-statsd-mozilla",
+                   ]
+  package { $app_packages: ensure => "installed" }
+
+}

puppet/zulip_internal/manifests/prod_app_frontend.pp

@@ -1,6 +1,6 @@
 class zulip_internal::prod_app_frontend {
   include zulip_internal::base
-  include zulip::app_frontend
+  include zulip_internal::app_frontend
 
   file { "/etc/nginx/sites-available/zulip":
     require => Package[nginx],

puppet/zulip_internal/manifests/staging_app_frontend.pp

@@ -1,6 +1,6 @@
 class zulip_internal::staging_app_frontend {
   include zulip_internal::base
-  include zulip::app_frontend
+  include zulip_internal::app_frontend
 
   file { "/etc/nginx/sites-available/zulip-staging":
     require => Package[nginx],