inventory, roles, config, docs: update all files to refactor the ansible variables structure

config/services/containers/infra/loki/etc/loki.yaml.j2

@@ -1,7 +1,7 @@
 ---
 server:
   http_listen_address: "::"
-  http_listen_port: 3100
+  http_listen_port: {{ services['loki']['ports']['https'] }}
   http_tls_config:
     cert_file: /etc/ssl/loki/loki.crt
     key_file: /etc/ssl/loki/loki.key

config/services/containers/infra/loki/loki.container.j2

@@ -13,7 +13,7 @@ Image=docker.io/grafana/loki:{{ version['containers']['loki'] }}
 ContainerName=loki
 HostName=loki
 
-PublishPort=3100:3100/tcp
+PublishPort={{ services['loki']['ports']['https'] }}:3100/tcp
 
 Volume=%h/containers/loki/data:/loki:rw
 Volume=%h/containers/loki/etc:/etc/loki:ro