Update imports to match source location
Created by: dpniel
All ubuntu-push package imports reference the ubports source location.
When checking out the repo you need to do something like
mkdir -p src/github.com/ubports
cd src/github.com/ubports
git clone git@github.com:ubports/ubuntu-push.git
cd ubuntu-push
make fetchdeps
make bootstrap
make check
Fixes #3 (closed)