Recommended packages are usually useful but we normally don't need
them in order to have a working system. As a result, avoid pulling
them in when doing a regular package installation or a distribution
update. Extra packages can be pulled in using the usual '-p' parameter
or from within the elements that actually need them. The results of
this change are quite significant, resulting to gains from a few dozen
of MBs up to a few hundred depending on the selected elements.
Change-Id: I5838829c631990c7a1f3b67548accd9a603fe20c
7f1494a433