Just to confirm, from the host you're trying to deploy to...does the wget command mentioned in the second MOS note complete successfully? Could you post the output?
If comms between the target host and OMS are 100%, you could also try to unload the agent software and deploy manually.
Hope this helps
it seems that you are using an self signed certificate. Is that right?
The HTTPS Upload Port on OMS Host is the same as noted in your command?
Your are trying to deploy the target via Enterprise Manager right?