feat: add prometheus server

- bump enc, include prometheus server nodes
- add prometheus role and server class

site/profiles/manifests/metrics/server.pp

@@ -0,0 +1,25 @@
+# profiles::metrics::server
+class profiles::metrics::server (
+  String    $version      = '2.48.0',
+  Boolean   $manage_user  = true,
+  Boolean   $manage_group = true,
+  String    $retention    = '30d',
+  Array     $scrape_jobs   = [],
+) {
+
+  $collect_scrape_jobs = $scrape_jobs.map |$job| {
+    {
+      'job_name' => $job,
+    }
+  }
+
+  class { 'prometheus::server':
+    manage_user         => $manage_user,
+    manage_group        => $manage_group,
+    version             => $version,
+    collect_scrape_jobs => $collect_scrape_jobs,
+    extra_options       => {
+      'storage.tsdb.retention.time' => $retention,
+    },
+  }
+}

site/roles/manifests/infra/metrics/prometheus.pp

@@ -0,0 +1,7 @@
+# a role to deploy a prometheus server
+class roles::infra::metrics::prometheus {
+  include profiles::defaults
+  include profiles::base
+  include profiles::base::datavol
+  include profiles::metrics::server
+}