We need to make run_suite do the following:

• Add the `KVM` device if it's missing

• Install engine SDK on the host.

Currently, `suite.sh` is handling those tasks.
The problem is that `suite.sh` sets a trap which calls cleanup on exit, which isn't always
desired when running locally.

• The implementation shouldn't assume that the root user invoked `run_suite` because there are still some people who prefer not to use mock when running OST.