This patch adds the Retry handler that can be used as part of the
event handling pipeline to retry failed handlers.
Change-Id: Ia86790de8efa6a3ef5b677a70ffbd2d8201f9d95
Partially-Implements: blueprint kuryr-k8s-integration
Adds basic K8s client implementation and CONF-based singletons for
both Neutron and K8s clients.
The K8s client added by this patch should be considered a temporary
solution that only implements the necessary parts to let us move
forward with kuryr-kubernetes. Eventually it will be replaced by either
[1] or [2].
The problem with [1] is that it does not yet support the streaming API
that we need for WATCH. And [2] is outside of the OSt umbrella, so [1]
is preferred over [2] unless [2] makes it into global-requirements.txt.
[1] https://github.com/openstack/python-k8sclient
[2] https://pypi.python.org/pypi/pykube
NOTE: Removed py3-related code from config and top-level __init__.
How to properly deal with that code is TBD.
Change-Id: Ib4eb410eaf9725c296fcdddd8857eb24b8929915
Partially-Implements: blueprint kuryr-k8s-integration
