Sync struct definitions with upstream.

Change-Id: I16e895e6ddbf0cbf27cee7330c1d30ba690f2f64
Signed-off-by: Piotr Sikora <[email protected]>

Author: PiotrSikora

ngx_cache_purge_module.c

@@ -291,6 +291,10 @@ typedef struct {
     ngx_array_t                   *proxy_values;
 
     ngx_array_t                   *redirects;
+#  if defined(nginx_version) && (nginx_version >= 1003001)
+    ngx_array_t                   *cookie_domains;
+    ngx_array_t                   *cookie_paths;
+#  endif /* nginx_version >= 1003001 */
 
     ngx_str_t                      body_source;