deprecate skopeo layers
deprecate skopeo layers

Signed-off-by: Antonio Murdaca <f9809039ea4850e75dcb8d80b778844aa463358f@redhat.com>

mtrmac/skopeo,mtrmac/skopeo,jwhonce/skopeo,jwhonce/skopeo,mtrmac/skopeo,projectatomic/skopeo,projectatomic/skopeo