fb_letsencrypt: fix lack of starting timer (facebook#286)

Summary:
`:enable` isn't enough, timers actually need to be started.

Signed-off-by: Phil Dibowitz <phil@ipom.com>

Pull Request resolved: facebook#286

Differential Revision: D70206854

fbshipit-source-id: ec5b9832651ed736bcb68e03c0c851cea43effb2

Author: jaymzh

cookbooks/fb_letsencrypt/recipes/default.rb

@@ -34,11 +34,11 @@
 service 'conditionally enable certbot.timer' do
   only_if { node['fb_letsencrypt']['enable_package_timer'] }
   service_name 'certbot.timer'
-  action :enable
+  action [:enable, :start]
 end
 
 service 'conditionally disable certbot.timer' do
   not_if { node['fb_letsencrypt']['enable_package_timer'] }
   service_name 'certbot.timer'
-  action :disable
+  action [:stop, :disable]
 end