Move tide_update_period back to 10s (#3910)
Move tide_update_period back to 10s (#3910)

Currently this causes both tide and deck to regularly use high CPU.
Since this only impacts a page rarely viewed, seems reasonable to
lower it. Being 10s outdated is not an issue.

Our value of 1s was driven from
https://github.com/kubernetes/test-infra/pull/7089, where it was
apparently important. However, I do not think the same applies for our
use cases.
istio/test-infra,istio/test-infra,istio/test-infra,istio/test-infra