The job JobSchedulerManagedDBReportJob should read credentials for smtp from section [smtp] and not from section [spooler]

Description
The job JobSchedulerManagedDBReportJob reads credentials for smtp from section [smtp] and not from section [spooler]

This effects the values for:

• mail.smtp.port
• mail.smtp.password
• mail.smtp.user

Desired behaviour
The value for

• mail.smtp.port
• mail.smtp.password
• mail.smtp.user

should be readed from the section [smtp] as JobScheduler does.

Note
The values are read from the section [smtp]. If not found there, they are read from the section [spooler]. The change is therefore compatible with the old behaviour.