
1. Sync sphinx dependency with global requirements. It caps python 2 since sphinx 2.0 no longer supports Python 2.7. 2. Update some URLs to latest Change-Id: I12ab3ba42683f9f75189ab597b9768ae5ec7a3fb
1. Sync sphinx dependency with global requirements. It caps python 2 since sphinx 2.0 no longer supports Python 2.7. 2. Update some URLs to latest Change-Id: I12ab3ba42683f9f75189ab597b9768ae5ec7a3fb