tools: log.info outgoing notifications

log.info recipient and subject. log.debug message body.

Change-Id: I8b4fca0623351729cd918d5e8dd79d1b861f224f
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1020760
Signed-off-by: Mooli Tayer <mtayer@redhat.com>