faft: Temporarily mask these tests which require a factory install shim

Since we haven't checked the existence of a factory install shim in the USB
port. So temporarily mask these tests. Otherwise, forgetting to insert a
factory install shim during test caused the TPM updated and not easy to be
recovered.

BUG=chromium-os:35258
TEST=None, trivial.

Change-Id: I8361a79fc6acf35c9dae79d0b2cebbd77538adf4
Reviewed-on: https://gerrit.chromium.org/gerrit/37608
Reviewed-by: Vic Yang <victoryang@chromium.org>
Commit-Ready: Tom Wai-Hong Tam <waihong@chromium.org>
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
2 files changed