Sync struct definitions with upstream.

Change-Id: I2da64406ee46167c376a9984cff87c6c79c82694
Signed-off-by: Piotr Sikora <[email protected]>

Author: PiotrSikora

ngx_cache_purge_module.c

@@ -171,6 +171,10 @@ typedef struct {
     ngx_uint_t                     header_params;
 #  endif /* nginx_version >= 8040 */
 
+#  if defined(nginx_version) && (nginx_version >= 1001004)
+    ngx_flag_t                     keep_conn;
+#  endif /* nginx_version >= 1001004 */
+
     ngx_http_complex_value_t       cache_key;
 
 #  if (NGX_PCRE)
@@ -300,6 +304,10 @@ typedef struct {
 
     ngx_flag_t                     redirect;
 
+#  if defined(nginx_version) && (nginx_version >= 1001004)
+    ngx_uint_t                     http_version;
+#  endif /* nginx_version >= 1001004 */
+
     ngx_uint_t                     headers_hash_max_size;
     ngx_uint_t                     headers_hash_bucket_size;
 } ngx_http_proxy_loc_conf_t;