Assess healthiness by factoring in periodOfTime

Modify the health check so that it reports healthy only when there are
no outstanding tasks for a duration of at least N, where N corresponds to the
value set in the `periodOfTime` setting.

Bug: Issue 312895374
Change-Id: Id3fe47605e6a82ca09e79f52b224af7beb77e2f4
4 files changed
tree: 3b82fee5251deba4702ea3af267acd1453a6efb6
  1. example-setup/
  2. src/
  3. .gitignore
  4. BUILD
  5. Jenkinsfile
  6. LICENSE