This commit adds a new sphinx extension that inspects the nova code
and adds information about the existing versioned notifications to
the nofitications devref. This way the devref is automatically kept
up to date with relevant information.
Partially-Implements: bp versioned-notification-api
Change-Id: If65d5d81e26cb2b4a9f57a8c7d37d3de310ebe00
A new config option is introduced called 'notification_format'
which specifies the format of the notifications emitted, possible
values are 'versioned', 'unversioned', 'both'. The default value is 'both'.
Also to help consumers the versioned notifications will be emited to
a separate topic called 'versioned_notifications'.
DocImpact: new config option notification_format
Partially-Implements: bp versioned-notification-api
Change-Id: Ie45c03175800bb14269f3976b03a53488e084339