Swarm base_unittests and net_unittests on Linux memory bots. I missed this earlier.

Swarm base_unittests and net_unittests on Linux memory bots. I missed this earlier.

Also increase the sharding level. I missed that the testers were bare metal machines, and that's why tests ran so fast there.

BUG=414808
R=maruel@chromium.org

Committed: https://crrev.com/e1c3d014e2490387fac76102debfd482520052f6
Cr-Commit-Position: refs/heads/master@{#297451}

[jam, 2014-09-30 17:48:43]

jam@chromium.org changed reviewers:
+ maruel@chromium.org

[M-A Ruel, 2014-09-30 18:05:07]

lgtm

[jam, 2014-09-30 18:09:36]

Committed patchset #3 (id:40001) to pending queue manually as
d923fba06bd1165ecd538f200c84cfc8ed66b768 (presubmit successful).

[commit-bot: I haz the power, 2014-09-30 18:10:01]

Patchset 3 (id:??) landed as
https://crrev.com/e1c3d014e2490387fac76102debfd482520052f6
Cr-Commit-Position: refs/heads/master@{#297451}