hardcode pbr and d2to1 versions

Hard code pbr to d2to1 to >=0.2.10,<0.3 and
pbr to >=0.5,<0.6 for consistency across projects.

Change-Id: I7163bef37934856e5f80df336044f8ebcb690797
Signed-off-by: Chuck Short <chuck.short@canonical.com>
Merge "hardcode pbr and d2to1 versions"