* modules/ssl/ssl_util_ocsp.c (serialize_request): Set the Connection header

* modules/ssl/ssl_util_ocsp.c (serialize_request): Set the Connection header
  to close to indicate that we do not want to keep the HTTP connection to the
  OCSP responder alive. We don't reuse the connections currently and if the
  OCSP responder keeps the connection alive this could cause us to wait for
  keepalive timeout of the OCSP responder to timeout until we finish our
  reading of the OCSP response.

PR: 64135

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1874007 13f79535-47bb-0310-9956-ffa450edef68