feat: create exporters module (#364)

- upgrade node_exporter, bring managed under exporters module
- upgrade postgres_exporter, bring managed under exporters module
- add flag to cleanup previous iterations of exporters from prometheus module
- fix issues with vmclusster: replication + dedup

Reviewed-on: #364

hieradata/common.yaml

@@ -165,6 +165,7 @@ hiera_include:
   - profiles::accounts::rundeck
   - limits
   - sysctl::base
+  - exporters::node_exporter
 
 profiles::ntp::client::peers:
   - 0.au.pool.ntp.org
@@ -205,6 +206,9 @@ profiles::consul::client::node_rules:
   - resource: node
     segment: ''
     disposition: read
+  - resource: service
+    segment: node_exporter
+    disposition: write
 
 profiles::packages::include:
   bash-completion: {}
@@ -288,7 +292,8 @@ profiles::puppet::client::dns_alt_names:
 puppetdbapi: puppetdbapi.query.consul
 puppetdbsql: puppetdbsql.service.au-syd1.consul
 
-prometheus::node_exporter::export_scrape_job: true
+exporters::node_exporter::enable: true
+exporters::node_exporter::cleanup_old_node_exporter: true
 prometheus::systemd_exporter::export_scrape_job: true
 
 ssh::server::storeconfigs_enabled: false