feat: add a nomad agent v2 role (#293)

- excludes ceph (will be passed from incus)
- excludes frrouting (will use host-networking)

Reviewed-on: https://git.query.consul/unkinben/puppet-prod/pulls/293

site/roles/manifests/infra/nomad/agentv2.pp

@@ -0,0 +1,12 @@
+# a role to deploy a nomad agent, second iteration
+# using host based networking
+class roles::infra::nomad::agentv2 {
+  if $facts['firstrun'] {
+    include profiles::defaults
+    include profiles::firstrun::init
+  }else{
+    include profiles::defaults
+    include profiles::base
+    include profiles::base::datavol
+  }
+}