fix(config): Include binary packages from current SDK version.

Currently building new releases can fail during the 'update_chroot' step
because the release it is building doesn't have any binary packages yet.
To avoid this add the current built SDK version as a second source for
chroot binary packages.
clean(binhost): All references to these files have been removed.
Merge pull request #72 from marineam/sdk-version

Sdk version