add nohead param to skip over the cache check with HEAD method

src/mod/applications/mod_httapi/mod_httapi.c

@@ -2530,6 +2530,7 @@ static switch_status_t locate_url_file(http_file_context_t *context, const char
 
 	lock_file(context, SWITCH_TRUE);
 
+	if (!context->url_params || !switch_true(switch_event_get_header(context->url_params, "nohead"))) {
 		if ((status = fetch_cache_data(context, url, &headers, NULL)) != SWITCH_STATUS_SUCCESS) {
 			if (status == SWITCH_STATUS_NOTFOUND) {
 				unreachable = 2;
@@ -2561,6 +2562,9 @@ static switch_status_t locate_url_file(http_file_context_t *context, const char
 		}
 		
 		switch_event_destroy(&headers);
+	}
+
+
 	fetch_cache_data(context, url, &headers, context->cache_file);
 	metadata = switch_core_sprintf(context->pool, "%s:%s:%s:%s",
 								   url,