Bugfix: linebreak caused illegal notification_email address

Hey Tom, a small bugfix here. The linebreak after `notification_email` in `templates/globaldefs.erb` caused `keepalived` to try to send an email to `{`. This caused `exim` SMTP on Debian Wheezy to throw an error and exit before sending emails to the rest of the valid addresses. Updated version tested and working with `exim` and `postfix`. Cheers!