As part of the effort of getting hypervisor isolated windows container
support working for the CRI entrypoint here, add the runhcs-wcow-hypervisor
handler for the default config. This sets the correct SandboxIsolation
value that the Windows shim uses to differentiate process vs. hypervisor
isolation. This change additionally sets the wcow-process runtime to
passthrough io.microsoft.container* annotations and the hypervisor runtime
to accept io.microsoft.virtualmachine* annotations.
Note that for K8s users this runtime handler will need to be configured by
creating the corresponding RuntimeClass resources on the cluster as it's
not the default runtime.
Signed-off-by: Daniel Canter <dcanter@microsoft.com>