ArgsEscaped has now been merged into upstream OCI image spec.
This change removes the workaround we were doing in containerd
to deserialize the extra json outside of the spec and instead
just uses the formal spec types.
Signed-off-by: Justin Terry <jlterry@amazon.com>
(cherry picked from commit d4b9dade13)
Signed-off-by: Kirtana Ashok <Kirtana.Ashok@microsoft.com>