Add a `.generate-bindings` make target that only runs in the absence of
the `.generate-bindings` file or when a `types.go` file below
`pkg/bindings` has changed.
This will regenerate the go bindings and make sure the code is up2date.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>