Use per-validator vaults in PoS for charging for deploy

Description

Background
Discussed during May 2019 dev retreat: https://rchain.atlassian.net/wiki/spaces/CORE/pages/719618130/2019-05-08+Meeting+notes+block+merging+conflict+resolution+without+replay. Decision that including a vault for each validator will help resolve merge conflicts on deploys.

Done when
The PoS contract is updated to provide a vault for each validator.

Status

Assignee

Timm Schäuble

Reporter

Kelly Foster

Components

Story Points

8

Epic Link

None

Sprint

Priority

High