Fixes #33214: Set minimum Puma threads equal to maximum puma threads …

…by default

This has been shown to prevent memory leaks that can appear in Foreman
when running under Puma. This only changes the default to match and
users must still be aware of this potential when changing the tunings.

manifests/params.pp

@@ -63,7 +63,7 @@
   $foreman_service = 'foreman'
   $foreman_service_ensure = 'running'
   $foreman_service_enable = true
-  $foreman_service_puma_threads_min = 0
+  $foreman_service_puma_threads_min = 16
   $foreman_service_puma_threads_max = 16
   $foreman_service_puma_workers = 2