This implements the proxy that is exposed as Connection.object_store,
and includes some example usage as well as documentation and a user
guide.
python -m examples.object_store --list-containers
python -m examples.object_store --list-objects <container>
python -m examples.object_store --upload-directory <directory> --pattern
<glob pattern>
Ex: ... --upload-directory pictures/ --pattern "*.jpg"
Change-Id: I8739ebca2ac77ea4a4d6f4e3ff30a3a253d8b636
ad9a4c1878