fix: thundering hurd (#435)

- started all puppet clients at the same time, resulting in thundering herd
- add a randomness timer of 10 minutes

Reviewed-on: #435

site/profiles/manifests/puppet/client.pp

@@ -13,6 +13,8 @@ class profiles::puppet::client (
   Boolean $show_diff          = true,
   Boolean $usecacheonfailure  = false,
   Integer $facts_soft_limit   = 4096,
+  Boolean $splay              = true,
+  Integer $splaylimit         = 600,
 ) {
 
   # dont manage puppet.conf if this is a puppetmaster