* do not swallow exception triggered inside SWA handling
--> write it to the log
The real change is in src/com/sap/piper/Utils.groovy
All the changes in the tests are dealing with mocking the echo method
used in the Utils class mentioned above.
* avoid sending mails to addresses which contain the string noreply
* enrich test to ensure that mails containing the string noreply never end up in recipient list
* Update MailSendNotificationTest.groovy
Nobody will have a look at println statements emitted by tests. Proper way is to assert.
* log is empty, not sure if it makes sense to assert that the log is empty.
* result is already asserted, so everything is fine there ...
