1. Sync sphinx dependency with global requirements. It caps python 2 since sphinx 2.0 no longer supports Python 2.7. 2. Fix RST syntax in HACKING.rst 3. Update moved URLs in README.rst Change-Id: I74bfead9b1962ad9c5e9eb2f7ab79022566085c9
Some docs links have changed. We should update the wrong links in our codes. Change-Id: If9a763e33be41eb47ffd6c77e41ff9873bc67306
Moving everything to freezer repo
Change-Id: I2120297aed3d487eb832ab1841a78142e43e3eac