As part of ongoing effort to update the "application" and
"component" labels for the UCP components, there is a need
to align with the convention. We will update the label for
the deckhand API pod in this case.
Also updated helm_tk.sh to point to openstack-helm-infra for
reference to helm-toolkit as helm-toolkit has been removed
from the openstack-helm repo [0]
[0] https://review.openstack.org/#/c/558065/
Change-Id: I753c4ce653790250b79986c670224d0962f7676f
a004c7a19e