Support for /v1/txn

[margueritepd]

Consul 0.7 introduced the /v1/txn endpoint which allows multiple operations to the key/value store to occur within a transaction.

It would be useful to completely replace a kv subtree atomically. Currently this requires a delete and then a bulkload, which is not ideal. Any plans to incorporate consul transactions into consul-cli to support this workflow?

[Theaxiom]

Seems like an excellent research project. 👍