umoci: add -native variant
umoci: add -native variant

In preparation for using umoci along side of sloci as to
construct multi later oci images, we need a -native variant.

For now, we don't need skopeo on the host side, so we clear
it from the class-native RDEPENDS. Skopeo has significant
dependencies, so we'd rather avoid ever needing it as a
-native tool.

Signed-off-by: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@gmail.com>

lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization