Update Python files for move to OpenDev. Update openstackdocstheme also to newer version and remove now obsolete comments. Remove unused sections from setup.cfg. Change-Id: I2184e381f587c2630e514e44fa9a9f3bbc4d65e2
Sync with global requirements and allow newer versions of pbr and sphinx. Change-Id: I6d782ba0a3e69522ae236d22f4c5789858a53f1a
Change-Id: I27db4e65ae3b3d540a0f79831245ebc04fe8dac0