Add region and datacenter meta

And use conv.ToBool for .prometheus.enabled

templates/service_meta

@@ -1,5 +1,5 @@
       meta {
-[[- if .prometheus.enabled ]]
+[[- if conv.ToBool .prometheus.enabled ]]
   [[- if not (has .consul.meta "metrics-port") ]]
         metrics-port = "${NOMAD_HOST_PORT_metrics}"
   [[- end  ]]

variables.yml

@@ -81,6 +81,8 @@ consul:
     job: '${NOMAD_JOB_NAME}'
     group: '${NOMAD_GROUP_NAME}'
     namespace: '${NOMAD_NAMESPACE}'
+    region: '${NOMAD_REGION}'
+    datacenter: '${NOMAD_DC}'
     node: '${node.unique.name}'
 
   # Consul connect config