Comment 3 for bug 1834065

I was able to work around this problem by adding:

    "pubkeys": ["uuid"]

in the server definition json. The public key uuid can be found at
https://zrh.cloudsigma.com/ui/4.0/access/publicsshkeys

I found the solution here:

https://cloudsigma-docs.readthedocs.io/en/2.14/keypairs.html#pubkeys-resource