Switch Nova driver to using salt bootstrap
Switch Openstack driver to using salt.utils.cloud.bootstrap
split out create into request_instance
Fix up nova driver
split out request_instance for openstack
Add documentation for the new function
fixing lint issues
Merge pull request #12749 from gtmanfred/nova

Split request_instance into it's own function for nova and openstack drivers
list_nodes_full should be returning dicts
Add salt.utils.cloud.cache_node_list to nova
add cache_node_list to all drivers