As one of the community-wide goals, devstack has shifted to Ubuntu
Jammy from Antelope cycle [1]. So, add playbooks for Jammy to
installer.
Although Focal support is still remained so that you can setup your
environment on older version, but will be removed later.
There are some additional updates.
* Add bento as supported boxes which are well maintained more.
* Use experimental Vagrant Disk to expand disk space on logical volume
because for Ubuntu images of bento.
* Change to use ssh key in ed25519 instead of rsa because it was
deprecated in Jammy as default.
[1] https://lists.openstack.org/pipermail/openstack-discuss/2022-October/030845.html
Signed-off-by: Yasufumi Ogawa <yasufum.o@gmail.com>
Change-Id: I65b209a8ff2bd46adf2a4ee507ef7eee099d1b13
6e72a2d376