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: I671f4b7f655f12cc558fc64116e31f16560dd2e7