Make the rbm build system work with runc 1.0.0
The new build system has been tested with runc 0.1.1 (which is the version included in Debian stretch, and jessie-backports). However version 1.0.0 (Debian sid currently has version 1.0.0~rc2) includes some incompatible changes, so we will need to adapt how we use runc to make that work.
In version 1.0.0, the
runc start command has been replaced by
runc run: https://github.com/opencontainers/runc/commit/c669b8d1568633c68bd915561ceb2e5ecc1bfc6a
We will need to detect which version of runc is installed to use the correct command.