'weave --local create-bridge' is not compatible with fastdp

[dpw]

Addresses #1552.

[rade]

Hmm. So weave create-bridge doesn't do something useful even when docker is running?

[dpw]

Whether weave create-bridge does something useful is questionable. It creates something, but it's not a normal bridge, and you can't do anything with it that doesn't involve further weave commands that would do create_bridge anyway. So I can't think of a reason why someone would do weave create-bridge rather than weave create-bridge --local. Can you?

[rade]

I can't think of a reason why someone would do weave create-bridge rather than weave create-bridge --local. Can you?

I can't. Though perhaps the comment stating "create-bridge is run without the docker daemon" could do with some rephrasing, since create-bridge may be run with the docker daemon.

[awh]

@dpw would you like to reword the comment before I merge?

[dpw]

Done