Remove unnecessary extra variable definitions

The world could do with a bit less YAML!

ansible/roles/traefik/files/docker-compose.yml

@@ -5,8 +5,8 @@ services:
     image: traefik:v2.10
     user: "{{ docker_user.id }}"
     environment:
-      - CF_DNS_API_TOKEN={{ cloudflare_api_token }}
-      - GANDIV5_API_KEY={{ gandi_api_key }}
+      - CF_DNS_API_TOKEN={{ vault_cloudflare_api_token }}
+      - GANDIV5_API_KEY={{ vault_gandi_api_key }}
     volumes:
       - /tmp/traefik-logs:/var/log/traefik
       - ./traefik:/etc/traefik

ansible/roles/traefik/files/traefik.yml

@@ -54,7 +54,7 @@ api:
 certificatesResolvers:
   le:
     acme:
-      email: "{{ letsencrypt_email }}"
+      email: "{{ vault_letsencrypt_email }}"
       storage: /etc/traefik/acme.json
       dnsChallenge:
         provider: cloudflare
@@ -65,7 +65,7 @@ certificatesResolvers:
 
   gandi:
     acme:
-      email: "{{ letsencrypt_email }}"
+      email: "{{ vault_letsencrypt_email }}"
       storage: /etc/traefik/acme.json
       dnsChallenge:
         provider: gandiv5