tools: send db unavailable notification as 'alert' not 'solved'

Change-Id: I6d8637a7cafcafc94eef80a2286530d40f4236c0
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1007392
Signed-off-by: Mooli Tayer <mtayer@redhat.com>