[SRU C/D/U] UBUNTU: [Config]: Reenable runtime tests, mainly TEST_BPF

[Seth Forshee]

On Wed, Jan 30, 2019 at 04:11:44PM -0200, Thadeu Lima de Souza Cascardo wrote:
> BugLink: https://bugs.launchpad.net/bugs/1813955
> 
> We noticed that test_bpf module was not loaded anymore under the network
> selftests, making disco ADT fail. Cosmic had been doing fine, because we didn't
> catch these failures before.
> 
> After that, we noticed those configuration options under Runtime tests being
> dropped, as the commit messages explain.

I looked through the list, and honestly the ones we had enabled in
bionic look fairly arbitrary. For example TEST_LKM doesn't look very
useful (if module loading doesn't work I doubt we'd get any system
booted far enough to run the test), and others that might actually be
useful regression tests aren't enabled. So my preference would be that
we only enable those that we actually need right now, i.e. TEST_BPF, and
enable others if/when we integrate them into our regression testing.

Seth