cron: Set environment variables to use Smokescreen, if configured.

puppet/kandra/manifests/prod_app_frontend_once.pp

@@ -24,8 +24,9 @@ class kandra::prod_app_frontend_once {
     command => '/usr/lib/nagios/plugins/zulip_app_frontend/check_send_receive_time --site=https://$(/home/zulip/deployments/current/scripts/get-django-setting NAGIOS_BOT_HOST) >/dev/null',
   }
   zulip::cron { 'check_user_zephyr_mirror_liveness':
-    hour    => '*',
-    minute  => '*',
-    command => '/usr/lib/nagios/plugins/zulip_zephyr_mirror/check_user_zephyr_mirror_liveness >/dev/null',
+    hour      => '*',
+    minute    => '*',
+    command   => '/usr/lib/nagios/plugins/zulip_zephyr_mirror/check_user_zephyr_mirror_liveness >/dev/null',
+    use_proxy => false,
   }
 }

puppet/zulip/manifests/cron.pp

@@ -7,7 +7,20 @@ define zulip::cron(
   String $user = 'zulip',
   Optional[String] $command = undef,
   Optional[String] $manage = undef,
+  Boolean $use_proxy = true,
 ) {
+  if $use_proxy {
+    $proxy_host = zulipconf('http_proxy', 'host', 'localhost')
+    $proxy_port = zulipconf('http_proxy', 'port', '4750')
+    if $proxy_host != '' and $proxy_port != '' {
+      $proxy = "http://${proxy_host}:${proxy_port}"
+    } else {
+      $proxy = ''
+    }
+  } else {
+    $pxoy = ''
+  }
+
   $dsn = zulipconf('sentry', 'project_dsn', '')
   if $dsn != '' {
     include zulip::sentry_cli

puppet/zulip/templates/cron.template.erb

@@ -2,9 +2,13 @@ MAILTO=zulip
 PATH=/usr/local/bin:/usr/bin:/bin
 SHELL=/bin/bash
 USER=<%= @user %>
-<% if @dsn != '' %>
+<% if @proxy != '' -%>
+HTTP_proxy="<%= @proxy %>"
+HTTPS_proxy="<%= @proxy %>"
+<% end -%>
+<% if @dsn != '' -%>
 SENTRY_DSN=<%= @dsn %>
-<% end %>
+<% end -%>
 
 <%= @minute %> <%= @hour %> * * <%= @dow %>    <%= @user %>    <%= @run %>