This makes sure that the openstack client placement plugin gets
installed when either LIBS_FROM_GIT includes osc-placement or
placement is used, which is always now if you've enabled nova,
which is enabled by default.
Co-Authored-By: Matt Riedemann <mriedem.os@gmail.com>
Depends-On: Ica83e29780722dd1555904e46b9ff1d1fdf72516
Change-Id: I7c5a5c10288b356302bb3027837d4ed4f0fbad8c