Ambassador Operator release process doesn't release the bits

[acookin]

The bits that publish the operator images, manifests, helm chart and github release are unable to run with the current travis configuration.

There seem to be some stale credentials, and the travis yaml isn't configured correctly (it doesn't even checkout and run the commands in the right location).

I did some work to start converting this to github actions because it was too time consuming to debug in travis with the queuing, which you can find on this branch