Get node objects from Azure.

def nodes_az(c_obj):
    """Get node objects from Azure."""
    az_nodes = []
    try:
        az_nodes = c_obj.list_nodes()
    except BaseHTTPError as e:
        abort_err("\r HTTP Error with Azure: {}".format(e))
    az_nodes = adj_nodes_az(az_nodes)
    return az_nodes