The test_packages task tries to install the various packages that thee package task produces. However, after the server/tools split, one of those packages can't actually be installed unless the mongo-database-tools package is also available.

We actually have no need to install the metapackage, since we only install the tools in order to test install_compass. We should instead just install the database-tools-extra package.

This will result in a small loss of coverage in the sense that we will no longer be validating that all the packages are actually installable, which was a nice fact of the old testing setup. We should investigate, after completing this ticket, whether we want to restore coverage by obtaining the tools package during this test.