This fix tries to address the issue raised in #21976 and allows
the options of `--dns`, `--dns-search`, `--dns-opt` and `--net=host`
to work at the same time.
The documentation has been updated and additional tests have been
added to cover this change.
This fix fixes #21976.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: f17fb53f53
Component: cli