Output kubernetes error to controller log when app deploy fails

[dmcnaught]

Reproduce:
Port is not set correctly on docker image app from private registry (quay)
deis pull ...

Eg output in controller pod log
ERROR [hdf-json-api]: hdf-json-api-v3-cmd (app::deploy): Could not scale hdf-json-api-v3-cmd to 1. Deleting and going back to old release

controller/rootfs/scheduler/__init__.py

Lines 414 to 419 in 139e7c1

	raise KubeException(
	'Could not scale {} to {}. '
	'Deleting and going back to old release'.format(
	new_rc["metadata"]["name"], desired
	)
	) from e

cc @helgi

[helgi]

in #975 I made it so that more information is relayed back to the user via the API. Also logged in the controller logs. It will be part of 2.4

Give that a spin and see if you were talking about a different behaviour