Add specific setup inventory

By default, Zuul uses runAnsibleSetup on all inventory nodes prior
to running job playbooks.
This translates to doing an 'ansible -m setup' against all nodes, but
this won't work on nodes where Python is not available, like network
nodes.
This change adds a specific setup_inventory.yaml file, which will not contain
nodes where setup module cannot work.

Change-Id: Ieb02a19036854b8d9089bcd4cc9dd0b46e3ce2fc
4 files changed