Use OS::Heat::DeployedServer

Use OS::Heat::DeployedServer

The new DeployedServer resource in Heat will provide a native resource
for Server resources that are not orchestrated via Nova. This will allow
associating SoftwareDeployment's with servers that have not been
launched with Nova with Heat directly.

With the new resource, all of the SoftwareConfigTransport methods are
available, including POLL_TEMP_URL. This patch also updates the
get-occ-config.sh script to configure the requests collector in
os-collect-config.conf on the deployed servers.

Change-Id: I4b80421088acca709fe3f92741c5c052be483131
Partially-implements: blueprint split-stack-software-configuration
Depends-On: I07b9a053ecd3ef4411b602bbc6ef985224834cf8