Shard out disabling running during firstboot (provisioning) 25% -> 40%

Summary:
bumpsign

This diff was created using http://fburl.com/chefshardbump

Differential Revision: D59290163

fbshipit-source-id: 14c1aa66d18d99f27a1815732f2f6f8f380ac662

cookbooks/fb_timers/recipes/default.rb

@@ -59,5 +59,5 @@
 end
 
 fb_timers_setup 'fb_timers system setup' do
-  not_if { (node.firstboot_os? || node.firstboot_tier?) && node.in_shard?(24) }
+  not_if { (node.firstboot_os? || node.firstboot_tier?) && node.in_shard?(39) }
 end