Imports of package mockruntime

PathSynopsis
github.com/Microsoft/opengcs/service/gcs/oslayer
github.com/Microsoft/opengcs/service/gcs/oslayer/mockos
github.com/Microsoft/opengcs/service/gcs/runtimePackage runtime defines the interface between the GCS and an OCI container runtime.
github.com/Microsoft/opengcs/service/gcs/stdio
github.com/opencontainers/runtime-spec/specs-go
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.