remove pre-bookworm legacy code in Puppet

We have a bunch of code in our puppet codebase that checks for pre-bullseye releases. Remove that code when we finish upgrading to bullseye.

an example:

modified   modules/profile/manifests/prometheus/bind_exporter.pp
@@ -4,6 +4,14 @@ class profile::prometheus::bind_exporter(
 ) {
   $package_ensure = $ensure ? { 'present' => 'installed', 'absent' => 'absent' }
   $service_ensure = $ensure ? { 'present' => 'running', 'absent'  => 'stopped' }
+
+  # this should be dropped when bind exporter is upgraded to 0.3.0
+  # or later (BULLSEYE) everywhere
+  if versioncmp($facts['os']['release']['major'], '11') >= 0 {
+    $extra_options = ''
+  } else {
+    $extra_options = "-bind.pid-file /var/run/named/named.pid -bind.stats-groups 'server,view,tasks'"
+  }
   class { 'prometheus::bind_exporter':
     package_ensure    => $package_ensure,
     service_ensure    => $service_ensure,
@@ -17,8 +25,10 @@ class profile::prometheus::bind_exporter(
     package_name      => 'prometheus-bind-exporter',
     service_name      => 'prometheus-bind-exporter',
     # purge_config_dir => true,
-    # should be dropped when bind exporter is upgraded to 0.3.0 or later (BULLSEYE)
-    extra_options     => "-bind.pid-file /var/run/named/named.pid -bind.stats-groups 'server,view,tasks'",
+
+    # this should be dropped when bind exporter is upgraded to 0.3.0
+    # or later (BULLSEYE) everywhere
+    extra_options     => $extra_options,
   }
 
   # realize the allow rules defined on the prometheus server(s)

in the above code, we're remove first if block, and the extra_options => class parameter passed to prometheus::bind_exporter completely.

but in general, grep for:

• buster (case-insensitive)
• bullseye (case-insensitive)
• bookworm (case-insentitive)
• versioncmp
• lsbmajdistrelease
• lsbdistcodename