Inquiry on using jetcd in the vertx server

[EricJQ]

Versions

• etcd: not matter
• jetcd: 0.7.6
• java: JDK8

Describe the bug
When using jetcd in a vertx server, every time getKVClient(), there will be warn log 'You're already on a Vert.x context, are you sure you want to create a new Vertx instance?'
we just want to know，is it normal and does it matter?

To Reproduce
execute the following code on a vertx server:
Client.builder().endPoints({etcd_endpoints}).build().getKVClient()

[lburgazzoli]

This is new to me, do you have time to digg into it ?