Fix request #6099 - Error in syslog during DAILY system event

Do not attempt to dump gerrit keys during root daily

Change-Id: I9511cacaef4ef00dc8ba47b789f1b93f7e4499f3
Merge commit 'refs/changes/25/1825/2' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  Fix request #6099 - Error in syslog during DAILY system event

Change-Id: I58be56b347b5cf402eba92b10a90394233df5aee
This is Tuleap 6.9.99.52

Change-Id: I97922098725448dd6b3c34bbe6349fcd712aa9ae