Fixes #13107. This change enables Go duration strings computed relative to the client machine’s time to be used as input parameters to `docker events --since/--until` and `docker logs --since` arguments. Added unit tests for pkg/timeutils.GetTimestamp as well. Signed-off-by: Ahmet Alp Balkan <ahmetalpbalkan@gmail.com> Upstream-commit: 4e3b21f99e7fb7fac0075be2e7190d5f07c9ee66 Component: engine