[RELEASE-0.10] Cherry-pick https://github.com/knative/serving/pull/6088#6183

Merged

knative-prow-robot merged 1 commit intoknative:release-0.10from tcnghia:release-0.10

Dec 9, 2019

+15-24

Commits on Dec 9, 2019

Use prefix instead of regex for authority match in virtualservice (knative#6088 )
Nghia Tran
committed