Add option for custom error pages (#276)

defaults/main/template.yml

@@ -77,6 +77,7 @@ nginx_http_template:
             opts: []  # Listen opts like http2 which will be added (ssl is automatically added if you specify 'ssl:').
         server_name: localhost
         include_files: []
+        http_error_pages: {}
         error_page: /usr/share/nginx/html
         access_log:
           - name: main

molecule/common/playbook_template.yml

@@ -77,6 +77,8 @@
                 opts:
                   - default_server
             server_name: localhost
+            http_error_pages:
+              404: /404.html
             error_page: /usr/share/nginx/html
             client_max_body_size: 512k
             proxy_hide_headers:

templates/http/default.conf.j2

@@ -475,6 +475,12 @@ server {
     }
 {% endfor %}
 {% endif %}
+{% if item.value.servers[server].http_error_pages is defined %}
+    # redirect server error pages
+{% for error_code in item.value.servers[server].http_error_pages %}
+    error_page {{ error_code }} {{ item.value.servers[server].http_error_pages[error_code] }};
+{% endfor %}
+{% endif %}
 {% if item.value.servers[server].error_page is defined %}
     # redirect server error pages to the static page /50x.html
     #