Make finger clearance a configurable option

We will need to run two-finger tests with different levels of finger
clearance. This CL adds finger clearance as a configurable option to
tests which use two fingers.

BUG=b:148627899
TEST=Run affected tests.

Change-Id: I4405403ec31482f49ae1556c5e9e06c90c93cfd7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/optofidelity_TPPT/+/2773921
Reviewed-by: Harry Cutts <hcutts@chromium.org>
Commit-Queue: Sean O'Brien <seobrien@chromium.org>
Tested-by: Sean O'Brien <seobrien@chromium.org>
10 files changed