Enabling multiple disorder policy support

[cybertyche]

Currently, the Trill ingress code only allows a single disorder policy to be specified. Research has been done to allow that restriction to be loosened to multiple disorder policies set at different lag allowances. However, this work has not yet been imported into the main code base because of API issues - we need to figure out how to integrate the work more seamlessly.

Research paper link: https://ieeexplore.ieee.org/document/8509288