Consul ACL support

[rcny]

Hello! Thanks for the nice project!

Just a small question. Does this bot support authn to Consul via ACL tokens? I've looked through the code, but haven't found anything related to it.

[metalmatze]

I'm not aware. Happy to take a look at PRs! :)

[v-zhuravlev]

I believe it should be implemented in libkv library: docker/libkv#201, but not sure if it is maintained.