Changelog:
==========
The development server does not set Transfer-Encoding: chunked for 1xx, 204, 304, and HEAD responses.
Response HTML for exceptions and redirects starts with <!doctype html> and <html lang=en>.
Fix ability to set some cache_control attributes to False.
Disable keep-alive connections in the development server, which are not supported sufficiently by Python’s http.server.
Signed-off-by: Xu Huan <xuhuan.fnst@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
