Add a dummy "runtime" that just dumps its runtime config, either the
entirety of it, or a section of it corresponding to each command line
argument. Tests can use it to ensure that we set the right thing in the
configuration without also depending on the runtime to do as its asked,
which isn't always something we have control over.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
4581ef0dee