proxy: use full role name, add to metadata

Signed-off-by: Jakub Sokołowski <jakub@status.im>

meta/main.yml

@@ -13,3 +13,7 @@ galaxy_info:
     - name: infra-role-consul-service
       src: git+git@github.com:status-im/infra-role-consul-service.git
       scm: git
+
+    - name: infra-role-nginx
+      src: git+git@github.com:status-im/infra-role-nginx.git
+      scm: git

tasks/proxy.yml

@@ -1,7 +1,7 @@
 ---
 # Necessary to hide a few sensitive paths
 - name: Configure Nginx proxy
-  include_role: name=nginx
+  include_role: name=infra-role-nginx
   vars:
     nginx_sites:
       grafana_ssl_backend: