pybob does not install cmake automatically

[AlexanderFabisch]

Tried to install bolero from a docker container. It did not work because cmake was not installed and pybob did not try to install it. @malter is that behavior expected or should it install cmake automatically?

[malter]

We can also install cmake via pybob, I can update pybob asap.

[AlexanderFabisch]

Is it done?

[malter]

I updated pybob but it is untested