ability to replace oracle operators

[turadg]

What is the Problem Being Solved?

An oracle operator could become compromised or unavailable. Although the transaction feed can handle some unavailability the contract must provide a way to remove and disable an operator.

Description of the Design

API on the contract creatorFacet to remove an operator. There's already a method to make an invitation.

Security Considerations

Scaling Considerations

Test Plan

Bootstrap test of a scenario replacing one operator in the set.

Upgrade Considerations