Stop trying to install old pip and setuptools

Now that pip 1.4 is out, setuptools<0.7 is invalid because 1.4 will not
install 'pre-release' software without being explicitly asked, and all
of the pre 0.7 setuptools releases have a letter in them. Just stop
trying to do it, because we actually don't use it anyway.

Additionally, we were trying to intsall pip 1.3 for a test but were not
installing that into the local mirror. Match them so that they're equal
and can install.

Change-Id: I61b9b810e64b40ceccb5eb0f4b2ddc4faefd8e04
Install jeepyb and requirements from REPODIR

integration.sh already expects there to be a pbr source dir in
$REPODIR/pbr. If we pull jeepyb and requirements from the same place,
then we can gate them as wel as pbr.

Change-Id: Ie0eb513c2deade957d480a25dfba2c5486d14876