feat: add frr_exporter class (#369)

- add frr exporter to all nodes running frr

Reviewed-on: #369

hieradata/roles/infra/dns/master.yaml

@@ -1,6 +1,7 @@
 ---
 hiera_include:
   - frrouting
+  - exporters::frr_exporter
 
 profiles::dns::master::ns_role: roles::infra::dns::master
 profiles::dns::master::use_ns: region
@@ -178,6 +179,7 @@ networking::interfaces:
     mtu: 1500
 
 # frrouting
+exporters::frr_exporter::enable: true
 frrouting::ospfd_router_id: "%{facts.networking.ip}"
 frrouting::ospfd_redistribute:
   - connected
@@ -189,6 +191,12 @@ frrouting::ospfd_interfaces:
 frrouting::daemons:
   ospfd: true
 
+# consul
+profiles::consul::client::node_rules:
+  - resource: service
+    segment: frr_exporter
+    disposition: write
+
 # additional repos
 profiles::yum::global::repos:
   frr-extras: