Port existing impl

[pingginp]

We only need consul, and when using glide, it will drag the entire etcd repo down .... (it's like go npm install) the root cause is using glide and not switching to dep or vgo ... Further more the xordataexchange/crypt is using a deprecated version of consul client

• https://github.com/spf13/viper/blob/master/remote/remote.go
• https://github.com/xordataexchange/crypt has both consul and etcd
  • the 2 year old PR Switch from deprecated github.com/armon/consul-api to official hashic… xordataexchange/crypt#20 😅