We were installing ~24 packages before. Problem with this is it takes
quite a bit of time and is subject to many external failures. Installing
just shade should still be a valid test of significant coverage as it is
a non trivial python package and we use it in quite a few places.
Change-Id: I9cefc83ff280ca00cb434dbe6a1a2357163bc8a6
1c6e7f380e