Specify the organization name in the email subject

[rmiccoli]

This PR ensures that all the subjects of the various emails have a prefix, equal to [VO name + IAM], e.g.
in case of ATLAS VO all email subjects will be [atlas IAM] ...

[darcato]

Maybe it's better to add the VO name to the subject inside the createMessage method, so that it applies to all the messages.

[rmiccoli]

Maybe it's better to add the VO name to the subject inside the createMessage method, so that it applies to all the messages.

Done :)

[enricovianello]

Could you improve this PR description? @rmiccoli Thanks :) Then, we can surely sq+merge it

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud