Remove doc references to distribute.

Change-Id: I9ea56b6d765fa7214e4bcc0dbca877b411171eea
Properly pin pbr and d2to1 in setup.py

We did nova first in the pbr transition, so it didn't get the pin
we added to everyone else later on.

Fixes bug 1199923

Change-Id: I04c3e810f49a1e4388496ff5226cf094c787d1a9
Merge "Remove doc references to distribute."
Merge "Properly pin pbr and d2to1 in setup.py"
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp