Fixes #38217 - Set autocomplete attribute on name inputs

[adamruzicka]

to prevent a password manager from suggesting saved credentials in various name fields.

[adamruzicka]

The issue also mentioned these

1. Infrastructure -> Virt-who Configurations
2. Infrastructure -> HTTP Proxies
3. Administer -> Authentication Sources
4. Administer -> Users -> Create User -> User -> Email Address

Even with this patch, the password manager still offers suggestions for hypervisor username & password in 1, username & password in 2, account username & password in 3. Considering all of these are actual credentials, I'd let the password manager do its thing.

Administer -> Users -> Create User -> User -> Email Address

This remains. Sadly some browsers (at least firefox) seem to completely ignore autocomplete="off" so we'd have to resort to hacks to make it go away.

[MariaAga]

code makes sense and tested on the hostgroup form, thanks!