Yong Tang da58db9db7 Add label filter for docker system prune ...

This fix tries to address the issue raised in 29999 where it was not
possible to mask these items (like important non-removable stuff)
from `docker system prune`.

This fix adds `label` and `label!` field for `--filter` in `system prune`,
so that it is possible to selectively prune items like:
```
$ docker container prune --filter label=foo

$ docker container prune --filter label!=bar
```

Additional unit tests and integration tests have been added.

This fix fixes 29999.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 41471dfe1c
Component: cli

2017-04-06 09:11:25 -07:00

components/cli

Add label filter for docker system prune

2017-04-06 09:11:25 -07:00

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