Close SSH connections in Cloud Servers resource

Previously, it was possible that a failed stack or hung script could
cause an SSH connection to remain open.  This ensures that the SSH
connections are always closed.

Closes-Bug: #1267173
Change-Id: Ie31ddb8370349ad67c7f63916e6b3b202904da23
Implement neutron metering resources

Two new resources were added:
 - MeteringLabel
 - MeteringRule

These resources are realisation in heat neutron's
resources: metering-label and metering-label-rule.

Change-Id: I700dac3fa12d8202b873957542dba6ee1605c3e3
Implements: blueprint neutron-metering-resources
Add stack id and resource id in logs

Where applicable, the stack and resource id's will be added in the logs
that reference those stacks and/or resources.

blueprint log-resource-stack-id

Change-Id: I70958ddd4904d70ff26c7ad28e2f7fe951881198
Co-Authored-By: Daniel Givens <daniel.givens@rackspace.com>
Added heat url in config for heat standalone mode

And use heat url for heat standalone mode in client heat.

Closes-Bug: #1255713

Change-Id: Ibbb0c53bd88b77b4444b652cebbd06034f69cebe
Merge "Close SSH connections in Cloud Servers resource"
Merge "Add stack id and resource id in logs"
Merge "Implement neutron metering resources"
Merge "Added heat url in config for heat standalone mode"