Do not sync requirements to pbr

Syncing the requirements to pbr introduces a dependency on pip 1.4.
We don't actually require pip 1.4, and saying that we do breaks package
installation in a lot of cases.

Fixes-bug: #1296310
Change-Id: I69c67c4c8cba7076e33292eaab9070ba51b4dff3
Add ironic-python-agent to projects.txt

Ironic-python-agent is a new project under the Ironic program that
follows the global requirement guidelines.

Change-Id: I2f629a8f2987571895425585a20a53f1be850ff0
Merge "Do not sync requirements to pbr"