Author: Clark Boylan
Revision Date: 2020-05-06 21:42:23 UTC

Force PEM filetype with ssh-keygen

At some point ssh-keygen changed its default output format and now
python cryptography can't read the new default. Address this by forcing
the PEM output format which cryptography can read without problems.

Note this is a docs only change to help end users generate keys that
work with refstack after a user reported trouble with this.

Change-Id: I9d1f503817fee69fe22f19a98b506448bda1f888