nodepoolv3.yaml: Remove setting of default values
nodepoolv3.yaml: Remove setting of default values

config-drive defaults to true now, and image-name-format:
'{image.name}-{timestamp}' is the default.

Change-Id: I4142e155937f6049ee79b4a9c167d1d1a32a768c
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack-infra/project-config,openstack-infra/project-config