Add support for docker run options in test command

[jirikuncar]

What does this PR do?

Allows definition of custom docker run options for apigentools test. It is useful for attaching network or forwarding env variables.

Description of the Change

apigentools test --docker-run-options "--network=host" or APIGENTOOLS_DOCKER_RUN_OPTIONS="--network=host" apigentools test

Alternate Designs

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Possible Drawbacks

Verification Process

Additional Notes

Release Notes

Review checklist (to be filled by reviewers)

• [ ] Feature or bug fix MUST have appropriate tests (unit, integration, etc...)
• [ ] PR title must be written as a CHANGELOG entry (see why)
• [ ] Files changes must correspond to the primary purpose of the PR as described in the title (small unrelated changes should have their own PR)
• [ ] PR must have one changelog/ label attached. If applicable it should have the backward-incompatible label attached.
• [ ] PR should not have do-not-merge/ label attached.
• [ ] If Applicable, issue must have kind/ and severity/ labels attached at least.