Fixes #23196 - Add default values for cores and socket in VM

Fixes #23808 - monotonic timer to measure durations

Fixes #23920 - add missing header in welcome pages

Fixes #24057 - Email subject prefix accepts long strings (#5742)

Fixes #23994 - Do not update templates out of scope

Fixes #23991 - rephrase RSS setting description

Fixes #18765 - finish script use FQDN when IP is missing

This is resurrect of

https://github.com/theforeman/foreman/pull/2171/files

The old patch did not pass review because I was unable to explain the
motivation. The reason for the fallback is that only cloud compute...

Fixes #24071 - Adding locked state (#5741)

Fixes #23536 - No errors when unattended=false

fixes #24046 - return id as str for name as last resort

Foreman HasManyCommon concern uses 'id' as a value of last resort for
the name of an attribute. But Rails expects this value to a return a
string. This causes a problem for Katello. Take a look at the output...