cbuildbot: enable freon vm tests

These tests are being reenabled because freon now runs in VMs.

BUG=chromium:415785
TEST=run tryjobs with cartesion product of (freon,non-freon) and (x86,arm)
CQ-DEPEND=CL:248881,CL:248891,CL:248900,CL:248901

Change-Id: I8ffccc8cbbec32444596f6c07a7edf9b118196c5
Reviewed-on: https://chromium-review.googlesource.com/250862
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
2 files changed