Fix parsing and storage of generated SSH keys
Summary: Fixes T4772. We weren't parsing generated public keys properly, and were storing them in the wrong format.
Test Plan:
- Updated a private key.
- Generated a public key.
- Saved the public key.
- Used a generated private key to authenticate.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4772
Differential Revision: https://secure.phabricator.com/D8721