Loosen gyro zeroing fault thresholds

Change-Id: I915ce4234bbb5f9865cd0c7f4c5a2d490baeb68b
Signed-off-by: James Kuszmaul <jabukuszmaul@gmail.com>
diff --git a/frc971/zeroing/imu_zeroer_test.cc b/frc971/zeroing/imu_zeroer_test.cc
index b984b1a..0a68541 100644
--- a/frc971/zeroing/imu_zeroer_test.cc
+++ b/frc971/zeroing/imu_zeroer_test.cc
@@ -163,7 +163,7 @@
       << "We should not fault until we complete a second cycle of zeroing.";
   for (size_t ii = 0; ii < kMinSamplesToZero; ++ii) {
     zeroer.InsertAndProcessMeasurement(
-        MakeMeasurement({0.01, 0.05, 0.03}, {4, 5, 6}).message());
+        MakeMeasurement({0.01, -0.05, 0.03}, {4, 5, 6}).message());
   }
   ASSERT_TRUE(zeroer.Faulted());
   ASSERT_FALSE(zeroer.Zeroed());