[Integrated] RFR: Ensure that redirects are followed when verifying webrev links

[Robin Westberg]

Changeset: e6e05bcb
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2020-01-16 10:12:24 +0000
URL:       https://git.openjdk.java.net/skara/commit/e6e05bcb

Ensure that redirects are followed when verifying webrev links

Reviewed-by: ehelin

! bots/mlbridge/src/main/java/org/openjdk/skara/bots/mlbridge/WebrevStorage.java
! bots/mlbridge/src/test/java/org/openjdk/skara/bots/mlbridge/WebrevStorageTests.java
! test/src/main/java/org/openjdk/skara/test/TestWebrevServer.java