Ultradns tcpool hardening

This pull request adds commands needed to validate that traffic controller pools and records created include the same parameters as they were created with.

This PR is a baseline so that I can proceed to add support for `updateRecord` (mapped to the SOAP command `updatePoolRecord`).  This will allow us to change the TTL, weight, or value a pool member points to at runtime.

cc @jonbodner @jdamick