Description of problem:
On the instance page of horizon, when hovering over the flavour, the pop up does not contain the details of the flavour. This worked in 16.1.8 but does not work in 16.2.4

Version-Release number of selected component (if applicable):
Not working 16.2.4
Working 16.1.8

How reproducible:
Hover over the flavour name of an instance on the instance page in horizon

Additional info:
This has been fixed upstream and we also have an upstream bug opened:
https://bugs.launchpad.net/horizon/+bug/1886025
https://review.opendev.org/c/openstack/horizon/+/739685/

I think we just need to backport this to train, I have tested this patch in my 16.2.4 lab and it resolved the issue:
```
ansible -i $(which tripleo-ansible-inventory) Controller -m shell -a 'podman exec horizon sed -i "s/html:true,/html:true, sanitize: false,/" /usr/share/openstack-dashboard/openstack_dashboard/dashboards/project/instances/templates/instances/_instance_flavor.html' -b
```