All the small things

[fwsGonzo]

There are some things cropping up that gets annoying after a while:

Chainloader spams like crazy, even though it shouldn't be saying anything at all. Indeed, if you build qemu without the "Oh no, it's a 64-bit ELF check," you can boot without the chainloader at all.

The bridge needs to be setup before you can even run boot:
#2173

If you write a bogus network driver name you get a silent exit from vmrunner, even with -v.

The incantation to create a build folder is getting long:

mkdir -p build
pushd build
conan install .. -pr clang-6.0-linux-x86_64
source activate.sh
cmake ..
popd