Bump github.com/openshift/imagebuilder from v1.2.11 to v1.2.14,
introducing a BuiltinArgDefaults field in a Builder that holds defaults
for built-in BUILD... and TARGET... arguments.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Vendor openshift/imagebuilder and its dependencies, and pick up new
dependencies on golang.org/x/text and github.com/opencontainers/selinux.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Closes: #59
Approved by: rhatdan