Remove the container in case of detach mode

[milanbalazs]

Currently if the detach=True and remove=True parameters are specified the container is not deleted.

Reproduce the issue:

from podman import PodmanClient

uri = "unix:///run/user/1000/podman/podman.sock"

with PodmanClient(base_url=uri) as client:
    c = client.containers.run("nginx", deatch=True, remove=True, command="/bin/false")

    print(c.status)

With this change if the above parameters are provided then the container object is returned and the container removing (wait method is included) is started on a separated thread.

Fix for:

• Container is not deleted if detach=True and remove=True are specified #402

[openshift-ci]

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[milanbalazs]

This PR includes this #426 PR. Probably it would be nice to rebase this PR to master branch after merge the previous PR.