Add support fort consul token

[Dudesons]

No description provided.

[GordonTheTurtle]

Please sign your commits following these rules:
https://github.com/moby/moby/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "master" git@github.com:Dudesons/libkv.git somewhere
$ cd somewhere
$ git commit --amend -s --no-edit
$ git push -f

Amending updates the existing PR. You DO NOT need to open a new one.

[Dudesons]

this link seems down: http://apache.cs.utah.edu/zookeeper/zookeeper-3.5.1-alpha/zookeeper-3.5.1-alpha.tar.gz

[Dudesons]

@aluzzardi @sanimej @vieux Do you think this PR have any chance to be merged ?

[Dudesons]

@GordonTheTurtle