Additions and Improvements for Trident RAS API

Trident's RAS API does not honor the following config values:

topology.component.resources.onheap.memory.mb
topology.component.resources.offheap.memory.mb
topology.component.cpu.pcore.percent

Trident does not receive the user's config as part of its builder API, so it does not know the value of these. Instead of altering the existing API (we want to remain backwards-compatible), add some new methods for dealing with this.

There is also currently no way to set the master coord spouts' resources.