Update package name in devstack for ubuntu/jammy
Update package name in devstack for ubuntu/jammy

For python3, `python-nose` has been changed to `python3-nose` in Ubuntu
Jammy Jellyfish. This change is to update the package name to avoid an
error on exit.

Signed-off-by: Yasufumi Ogawa <0cbdead7c4bf8da8f6bef3a7960478ac9af89f0a@gmail.com>
Change-Id: I4c21b6527f37918397f7fb425075eb6c07534237

openstack/mistral,openstack/mistral