Disable Apt Recommends.

This disables apt's default behaviour of installing packages in the
Recommends field of other packages. While this can be useful, it
causes a lot of unnecessary software to be installed and may cause
explicit dependencies to be missed in some circumstances.

Change-Id: I10f4519290e6b3dafda3365c0c5dcc42ad17c090
Merge "Disable Apt Recommends."