2.1.0: Profile sub command

This mostly is a bunch of refactoring and doc improvements but also adds
the collins profiles command. This will return all the nodeclasses that
are available for provisioning along with the constraints for them. This
also improves the flexability around colins query for type, state and
status.

290df8d Update vendor
26da6e0 Add sort field support
e8f26ae Fix bazel build
d3fc459 Add profiles subcommand
ee5acea Fix breaking change in ipam method name
883fde5 Update go-collins version
b4654c8 go fmt
2480ba4 Add better base stuct support
62c78b7 Update README & Move Docs
f050c57 Refactor again
2a28884 Update Readme
cbac7b9 Better type, state, and status support
5acb393 Try to warn people
50b7d41 Try making the readme look better
6b6161b A word