chore(traefik): prefix all traefi vars with traefik_

roles/traefik/templates/traefik.yml.j2

@@ -1,23 +1,23 @@
 log:
-  level: {{ log_level }}
+  level: {{ traefik_log_level }}
 
-{% if enable_dashboard %}
+{% if traefik_enable_dashboard %}
 api:
   dashboard: true
-{% if not dashboard_domain %}
+{% if not traefik_dashboard_domain %}
   insecure: true
 {% endif %}
 {% endif %}
 
-{% if enable_access_logs %}
+{% if traefik_enable_access_logs %}
 accessLog:
-  format: {{ access_log_format }}
+  format: {{ traefik_access_log_format }}
 {% endif %}
 
 entryPoints:
   web:
     address: ":80"
-{% if use_ssl %}
+{% if traefik_use_ssl %}
     http:
       redirections:
         entryPoint:
@@ -38,19 +38,19 @@ providers:
     exposedByDefault: false
 {% endif %}
 
-{% if use_ssl and cert_mode == 'acme' %}
+{% if traefik_use_ssl and traefik_cert_mode == 'acme' %}
 certificatesResolvers:
-  {{ ssl_cert_resolver }}:
+  {{ traefik_ssl_cert_resolver }}:
     acme:
-      email: {{ ssl_email }}
+      email: {{ traefik_ssl_email }}
       storage: /letsencrypt/acme.json
       dnsChallenge:
         provider: rfc2136
         resolvers:
-          - "{{ acme_dns_nameserver }}"
+          - "{{ traefik_acme_dns_nameserver }}"
 {% endif %}
 
-{% if use_ssl %}
+{% if traefik_use_ssl %}
 tls:
   options:
     default: