Cherry pick fix for CVE-2021-0341 onto 4.9.x#6741

Merged

yschimke merged 2 commits intosquare:okhttp_4.9.xfrom yschimke:cve49

Jul 4, 2021

+207-26

Commits on Jul 4, 2021

Use generated certificates in unit tests (square#6346 )

yschimke
and
squarejesse
committed
More restrictive behaviour of OkHostnameVerifier (square#6353 )
yschimke
committed