tools: Fix libboost-python-dev

Not speficiying the version causes:

The following packages have unmet dependencies:
libboost-python-dev : Depends: libboost-python1.46-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Change-Id: Ibff3125f947cbee9e0afdcf911e1204147821342