Fix esky breaking

All CLI commands import salt.ssh. Windows esky builds seem to have a problem with resolving ```__name__``` correctly and so all salt commands were broken as a result because the import failed.

This is more of a temporary fix. I don't really like the fact that we're essentially forcing this file to be opened and encoded on every single salt command (even non-ssh commands). I'd like to discuss refactoring this to avoid it in the future.

cc: @plastikos