Tag these tasks.

roles/taiga/tasks/main.yml

@@ -190,11 +190,15 @@
 - template: src=taiga-http.nginx dest=/etc/nginx/conf.d/taiga-http.conf
         mode=0644 owner=nginx group=nginx
   notify: restart nginx
-  tags: taiga
+  tags:
+  - taiga
+  - nginx
 - template: src=taiga-ssl.nginx dest=/etc/nginx/conf.d/taiga-ssl.conf
         mode=0644 owner=nginx group=nginx
   notify: restart nginx
-  tags: taiga
+  tags:
+  - taiga
+  - nginx
 
 # Add nginx to the taiga group so it gets rights to read all our static stuff
 - user: name=nginx groups=taiga append=yes