Add internal provider

Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>

docs/content/reference/static-configuration/env-ref.md

@@ -213,6 +213,9 @@ Buckets for latency metrics. (Default: ```0.100000, 0.300000, 1.200000, 5.000000
 `TRAEFIK_METRICS_PROMETHEUS_ENTRYPOINT`:  
 EntryPoint (Default: ```traefik```)
 
+`TRAEFIK_METRICS_PROMETHEUS_MANUALROUTING`:  
+Manual routing (Default: ```false```)
+
 `TRAEFIK_METRICS_STATSD`:  
 StatsD metrics exporter type. (Default: ```false```)
 
@@ -237,6 +240,9 @@ Enable ping. (Default: ```false```)
 `TRAEFIK_PING_ENTRYPOINT`:  
 EntryPoint (Default: ```traefik```)
 
+`TRAEFIK_PING_MANUALROUTING`:  
+Manual routing (Default: ```false```)
+
 `TRAEFIK_PROVIDERS_CONSULCATALOG_CACHE`:  
 Use local agent caching for catalog reads. (Default: ```false```)