Bug LP 1863232 introduced a new Apache configuration option called
WSGISocketRotation which allows users to disable wsgi socket
rotation. This patch makes this configurable with a new
wsgi-socket-rotation config option that defaults to the Apache
default and can optionally be set to False.
Closes-Bug: #2021550
Change-Id: If1f41ae2c3048540f9bcace4bbb9d24200cfb427