* Update constraints to make sure that units go to the right machine
* Fix source for mysql-router apps
* http for install_source for telegraf
* Update some snap lxd stuff to ensure that works
* Some bionic changes
* Added local repos for everything
* Add focal related stuff to start migrating
* Add/fix CIS related stuff
* Update/fix juju model defaults
* Add model defaults just before the juju deploy
* Add new script to initialise vault
* Update vault keys to current mode