network/download: refactor network code (!90) · Merge requests · system-transparency / core / stboot

This is a stab at refactoring the code. This should in practice be more testable as the client as passed along through the code.

Could probably write up some test if we want to.

TODO:

CI fixup
Some validation functions should be moved from stboot.go, but havent found a good home yet.

network/download: refactor network code