Add explicit support for macvlan networks to bash completion

[albers]

Bash completion grabs the available network drivers from the output of docker info.
Unfortionally, the macvlan network driver will not appear there unless a network was created using it, see #24798 (comment).

This PR explicitly adds this driver to the computed driver list so that it is always available.
Note that this is a workaround until the upcoming plugin system is available.

Please schedule for 1.12.0.

[thaJeztah]

Should we add ipvlan as well here?

[albers]

Could not find it in the release notes. Did it also exit experimental?

[thaJeztah]

I think it did, but good question 😄 I'm running an experimental version, let me quickly check :)

[albers]

It's not in current master:

root@8b3519213a48:~# docker network create -d ipvlan some-network
Error response from daemon: plugin not found

root@8b3519213a48:~# docker version
Client:
 Version:      1.12.0-dev
 API version:  1.25
 Go version:   go1.6.3
 Git commit:   a9ca19f
 Built:        Wed Jul 20 19:45:23 2016
 OS/Arch:      linux/amd64

Server:
 Version:      1.12.0-dev
 API version:  1.25
 Go version:   go1.6.3
 Git commit:   a9ca19f
 Built:        Wed Jul 20 19:45:23 2016
 OS/Arch:      linux/amd64

[thaJeztah]

Looks like you're right; it's only macvlan #23524

[thaJeztah]

LGTM!

[vdemeester]

LGTM 🐸