Initial TiesDB check failure should result in a warning, not an error

[jrobble]

Failure to check TiesDB before running analytics results in an error like this:

   "errors": [
      {
         "details": [
            {
               "source": "WORKFLOW_MANAGER",
               "code": "TIES_DB_BEFORE_JOB_CHECK",
               "message": "java.net.UnknownHostException: some.host.bad: Name or service not known"
            }
         ]
      }
   ]

The entire job ends in ERROR.

Users have requested that instead the issue be treated as a warning so that the job can complete. There are times where TiesDB is not available but users still want to process data.