rule(macro trusted_logging_images): Add addl fluentd image
rule(macro trusted_logging_images): Add addl fluentd image

Openshift specific variant, example alert:

---
Log files were tampered (user=root command=fluentd /usr/bin/fluentd
--no-supervisor file=/var/log/journal.pos CID1 image=registry.redhat.io/openshift3/ose-logging-fluentd)
---

Signed-off-by: Mark Stemm <1b6cbc2e568a933a16c6fa30b73e50cd507debf7@gmail.com>

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