gujin 6f78538707 Sync Sphinx requirement
Sync sphinx dependency with global requirements. It caps python 2 since
sphinx 2.0 no longer supports Python 2.7.

Change-Id: I1a4715a60403ed9a76c9f2c55e566d83395bad7e
Closes-Bug: 1831533
2019-06-04 11:12:01 +08:00
..
2019-06-04 11:12:01 +08:00