Add ability to use container names for netem --target

[Tyson1986]

Now it uses IP\IPs for filtering.
As enhancement will be good to add ability to use container names
To get IP of container i use:
docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' <my_container_name>
But may be better solution.

[alexei-led]

@Tyson1986 container names are much better, I wanted to do this, just it requires bigger effort. Will keep this issue open.

[Tyson1986]

I've looked existed issues, and found that we have already discussed this topic in:
#24
And both forgot about it. So one can be closed :)

[Dieterbe]

is pretty easy to do with the docker client.
see https://github.com/grafana/metrictank/blob/1003db861aa5943d70b481f07cabbdff735967f8/stacktest/docker/docker.go#L98-L100

i agree, would be nice to have this available in pumba.

[deanstef]

Hello, any progress on this?