track response header timeout in mhe

pkg/protocols/common/hosterrorscache/hosterrorscache.go

@@ -124,7 +124,7 @@ func (c *Cache) MarkFailed(value string, err error) {
 	_ = c.failedTargets.Set(finalValue, existingCacheItemValue)
 }
 
-var reCheckError = regexp.MustCompile(`(no address found for host|Client\.Timeout exceeded while awaiting headers|could not resolve host|connection refused|connection reset by peer|i/o timeout|could not connect to any address found for host)`)
+var reCheckError = regexp.MustCompile(`(no address found for host|Client\.Timeout exceeded while awaiting headers|could not resolve host|connection refused|connection reset by peer|i/o timeout|could not connect to any address found for host|timeout awaiting response headers)`)
 
 // checkError checks if an error represents a type that should be
 // added to the host skipping table.