Send feature roll out metric even when the percentage is 0 or 100

Previously no metric is sent when the rollout percentage is 0 or 100, but even when the rollout rate is 100, not all people got the feature because there's a delay between the change and people syncing the repo. So we still need the metric when the percentage is 100.

Test: unittests
Change-Id: Id711963bac5290fa288e4a2b15d3f9033aee3d7f
1 file changed