RFR: 2266: TestInfoBot couldn't get checks after user changed their GitHub username

[Zhao Song]

Currently, Skara bot can't correctly handle HTTP status code 301 in rest requests. 
This patch is trying to make skara bot follows the redirect link when it encounters 301 status code.

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Commit messages:
 - SKARA-2266

Changes: https://git.openjdk.org/skara/pull/1652/files
  Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1652&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-2266
  Stats: 17 lines in 2 files changed: 16 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/skara/pull/1652.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1652/head:pull/1652

PR: https://git.openjdk.org/skara/pull/1652