ingestor_cloudfoundry-firehose - error pre-filling cache: cannot fetch token: 401 Unauthorized

[kinjelom]

After CF UAA restart, ingestor doesn't start with the old UAA client.

• cf-deployment: v12.1.0 (UAA: 74.2.0)
• logsearch/logsearch-for-cloudfoundry: v210.3.1, firehose-to-syslog v0.0.0 ;)

Steps to reproduce

• logsearch/ingestor: /var/vcap/jobs/ingestor_cloudfoundry-firehose/bin/pre-start
• cf/uaa: monit restart uaa
• logsearch/ingestor: monit restart ingestor_cloudfoundry-firehose
• after >5minutes:

  Exception occurred! Message: Error pre-filling cache:  Details: Get https://api.cf/v2/apps?results-per-page=100: oauth2: cannot fetch token: 401 Unauthorized
  Response: {"error":"unauthorized","error_description":"Bad credentials"}

Workaround

If I call /var/vcap/jobs/ingestor_cloudfoundry-firehose/bin/pre-start every time ingestor_cloudfoundry-firehose starts everything seems to work fine.

[kinjelom]

In my deployment CF/UAA and Logsearch/Ingestor was changing independently firehose-to-syslog client secret. This PR fix this case: https://github.com/cloudfoundry-community/logsearch-boshrelease/pull/153