fix nginx proxy configuration conflicts (#3489)

* Allow configuration of nginx proxy config path

* Fix the internal nginx configuration location

Signed-off-by: Johann Queuniet <contact@lordran.net>

roles/kubernetes/node/tasks/nginx-proxy.yml

@@ -6,7 +6,7 @@
 
 - name: nginx-proxy | Make nginx directory
   file:
-    path: /etc/nginx
+    path: "{{ nginx_config_dir }}"
     state: directory
     mode: 0700
     owner: root
@@ -14,7 +14,7 @@
 - name: nginx-proxy | Write nginx-proxy configuration
   template:
     src: nginx.conf.j2
-    dest: "/etc/nginx/nginx.conf"
+    dest: "{{ nginx_config_dir }}/nginx.conf"
     owner: root
     mode: 0755
     backup: yes