Ian Wienand 0177b40618 zuul-web: move LogFormat combined-cache into config
These two values overwrite each other, move into common configuration.

The "cache-status" is a verbose string, so quote it.

Change-Id: I3cc4627de3d6a0de1adcfed6b424fc3ed0099245
2020-09-14 11:14:28 +10:00
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