Update wait calls to call Wait on Command
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Update lxc to use cmd.Wait()
Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
improve numeric only id detection

Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
Merge pull request #6062 from crosbymichael/update-waits

Update wait calls to call Wait on Command
Merge pull request #6063 from vieux/improve_number_detection

improve numeric only id detection