Add ssh key configuration for instance edit WD-19727

[edlerd]

Done

• Add ssh key configuration for instance edit

Fixes WD-19727

QA

1. Run the LXD-UI:
   • On the demo server via the link posted by @webteam-app below. This is only available for PRs created by collaborators of the repo. Ask @mas-who or @edlerd for access.
   • With a local copy of this branch, build and run as described in the docs.
2. Perform the following QA steps:
   • create an instance and apply ssh keys
   • create a profile with ssh keys
   • ensure the profiles ssh keys get applied

Todo:

• profile edit and create saving
• show inherited ssh keys
• move to dedicated section in config form

[webteam-app]

Demo

Jenkins

demos.haus