Is this a BUG REPORT or FEATURE REQUEST? (choose one): BUG REPORT

Minikube version (use minikube version): v0.14.0

Environment:

• OS : macOS Sierra 1.12.1
• VM Driver : xhyve
• Docker version: 1.11.1
• Install tools:
• Others:

What happened:
Minikube changes IP address when recreated.

What you expected to happen:
Minikube should retain the IP address when deleted and created again.

How to reproduce it (as minimally and precisely as possible):

• minikube start --vm-driver=xhyve
• minikube ip (note the IP address)
• minikube stop
• minikube delete
• minikube start --vm-driver=xhyve
• minikube ip (IP address has changed)

Anything else do we need to know:
I have several things configured to Minikube's IP address and have to recreate it occasionally. They all have to be reconfigured each time. It would be convenient to have Minikube not change its IP address after deleting and recreating.