testsuite: clarify: factor out common deb/rpm code, move common vm/testsuite install scripts to /autoinstall, move buildbot infra to tests/buildbot
- [DH] tests/config/atom330
- [DH] tests/config/build
- [DH] tests/config/christian
- [DH] tests/config/default
- [DH] tests/config/g-dellm65-1
- [DH] tests/config/g-quadri1
- [DH] tests/config/g-virtual05
- [DH] tests/config/vladimir