Implement --wprocket

* cleanup templates by using variables
* add configuration for wp-rocket
* update mapping for wp-rocket

wo/cli/templates/wprocket.mustache

@@ -0,0 +1,21 @@
+# WPSC NGINX CONFIGURATION - WO v3.9.7
+# DO NOT MODIFY, ALL CHANGES WILL BE LOST AFTER AN WordOps (wo) UPDATE
+# $cache_uri variable set in /etc/nginx/conf.d/map-wp.conf
+
+# Use cached or actual file if they exists, Otherwise pass request to WordPress
+location / {
+  try_files /wp-content/cache/wp-rocket/$http_host/$cache_uri/index$https_prefix.html $uri $uri/ /index.php$is_args$args;
+}
+location ~ \.php$ {
+  try_files $uri =404;
+  include fastcgi_params;
+  fastcgi_pass {{upstream}};
+}
+
+location ~* /cache/wp-rocket/\.html$ {
+	etag on;
+	add_header Vary "Accept-Encoding, Cookie";
+    access_log off;
+    log_not_found off;
+    expire 10h;
+}