Module apiclient.base has several updates in oslo, so we need to sync
latest code to have ability to reuse new functional.
Updates in oslo which related to usage of apiclient.base in heatclient:
- I491f9b54c7074546cf738c6150666bfcc3966a78
- I1db6c12a1f798de7f7fafd0c34fb0ef523610153
Related to bp common-client-library-2
Change-Id: I509d6efb0c8eef87ba2e4aa02ebb44ba149a9860