Debian binary package stanzas do not have a Build-Depends field. These were previously just getting ignored

All we depend on is protobuf version 3, and
since protobuf follows semver, it should be safe
to make this reduction

To run swss-common tests, we need redis installed.
However, sonic-buildimage slave images specifically
install mock redis packages to avoid installing real
redis. Some packages skip their tests entirely because
redis is not present in the buildimage (swss-common).
So, I will follow in their footsteps and instead
just turn off testing during .deb build, and we can
instead have the tests as a separate CI run.