test-docker-py: skip AttachContainerTest::test_run_container_reading_socket_ws

Tests are failing with this error:

    E   ValueError: scheme http+docker is invalid

Which is reported in docker-py in https://github.com/docker/docker-py/issues/1478.
Not sure what changed in the tests, but could be due to updated Python
version or dependencies, but let's skip it for now.

Test failure:

    ___________ AttachContainerTest.test_run_container_reading_socket_ws ___________
    tests/integration/api_container_test.py:1245: in test_run_container_reading_socket_ws
        pty_stdout = self.client.attach_socket(container, opts, ws=True)
    docker/utils/decorators.py:19: in wrapped
        return f(self, resource_id, *args, **kwargs)
    docker/api/container.py:98: in attach_socket
        return self._attach_websocket(container, params)
    docker/utils/decorators.py:19: in wrapped
        return f(self, resource_id, *args, **kwargs)
    docker/api/client.py:312: in _attach_websocket
        return self._create_websocket_connection(full_url)
    docker/api/client.py:315: in _create_websocket_connection
        return websocket.create_connection(url)
    /usr/local/lib/python3.7/site-packages/websocket/_core.py:601: in create_connection
        websock.connect(url, **options)
    /usr/local/lib/python3.7/site-packages/websocket/_core.py:245: in connect
        options.pop('socket', None))
    /usr/local/lib/python3.7/site-packages/websocket/_http.py:117: in connect
        hostname, port, resource, is_secure = parse_url(url)
    /usr/local/lib/python3.7/site-packages/websocket/_url.py:62: in parse_url
        raise ValueError("scheme %s is invalid" % scheme)
    E   ValueError: scheme http+docker is invalid
    ------- generated xml file: /src/bundles/test-docker-py/junit-report.xml -------

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

hack/make/test-docker-py

@@ -18,12 +18,13 @@ source hack/make/.integration-test-helpers
 # flag) until they are fixed upstream. For example:
 # --deselect=tests/integration/api_container_test.py::AttachContainerTest::test_attach_no_stream
 # TODO re-enable test_attach_no_stream after https://github.com/docker/docker-py/issues/2513 is resolved
+# TODO re-enable test_run_container_reading_socket_ws. It's reported in https://github.com/docker/docker-py/issues/1478, and we're getting that error in our tests.
 # TODO re-enable test_create_with_restart_policy after https://github.com/docker/docker-py/pull/3165 is included in a release
 # TODO re-enable test_api_error_parses_json after https://github.com/docker/docker-py/pull/3165 is included in a release
 # TODO re-enable test_connect_with_ipv6_address after we updated to a version of docker-py with https://github.com/docker/docker-py/pull/3169
 # TODO re-enable test_create_network_ipv6_enabled after we updated to a version of docker-py with https://github.com/docker/docker-py/pull/3169
 # TODO re-enable test_create_with_ipv6_address after we updated to a version of docker-py with https://github.com/docker/docker-py/pull/3169
-: "${PY_TEST_OPTIONS:=--junitxml=${DEST}/junit-report.xml --deselect=tests/integration/api_container_test.py::AttachContainerTest::test_attach_no_stream --deselect=tests/integration/api_container_test.py::CreateContainerTest::test_create_with_restart_policy --deselect=tests/integration/errors_test.py::ErrorsTest::test_api_error_parses_json --deselect=tests/integration/api_network_test.py::TestNetworks::test_connect_with_ipv6_address --deselect=tests/integration/api_network_test.py::TestNetworks::test_create_network_ipv6_enabled --deselect=tests/integration/api_network_test.py::TestNetworks::test_create_with_ipv6_address}"
+: "${PY_TEST_OPTIONS:=--junitxml=${DEST}/junit-report.xml --deselect=tests/integration/api_container_test.py::AttachContainerTest::test_attach_no_stream --deselect=tests/integration/api_container_test.py::AttachContainerTest::test_run_container_reading_socket_ws --deselect=tests/integration/api_container_test.py::CreateContainerTest::test_create_with_restart_policy --deselect=tests/integration/errors_test.py::ErrorsTest::test_api_error_parses_json --deselect=tests/integration/api_network_test.py::TestNetworks::test_connect_with_ipv6_address --deselect=tests/integration/api_network_test.py::TestNetworks::test_create_network_ipv6_enabled --deselect=tests/integration/api_network_test.py::TestNetworks::test_create_with_ipv6_address}"
 (
 	bundle .integration-daemon-start