Update CI tests to run python docker library against API

* Update reference to docker-py to docker to reflect change in library
  name
* Update tests to create storage sandbox
* Enable all tests that endpoints support
* Refactor containers/{id}/rename to return 404 not 500
* Refactor tests to use quay.io vs. docker.io

Signed-off-by: Jhon Honce <jhonce@redhat.com>

test/python/docker/README.md

@@ -0,0 +1,38 @@
+# Docker regression test
+
+Python test suite to validate Podman endpoints using docker library (aka docker-py).
+See [Docker SDK for Python](https://docker-py.readthedocs.io/en/stable/index.html).
+
+## Running Tests
+
+To run the tests locally in your sandbox (Fedora 32,33):
+
+```shell
+# dnf install python3-docker
+```
+
+### Run the entire test suite
+
+```shell
+# python3 -m unittest discover test/python/docker
+```
+
+Passing the -v option to your test script will instruct unittest.main() to enable a higher level of verbosity, and produce detailed output:
+
+```shell
+# python3 -m unittest -v discover test/python/docker
+```
+
+### Run a specific test class
+
+```shell
+# cd test/python/docker
+# python3 -m unittest -v tests.test_images
+```
+
+### Run a specific test within the test class
+
+```shell
+# cd test/python/docker
+# python3 -m unittest tests.test_images.TestImages.test_import_image
+```