Relax tolerance for FP comparison in test harness

Tests like RNN needs slightly more relaxed tolerance than 4ULP.
Use 1e-5 from corresponding TFLite tests.

Bug: 63905942
Test: VtsHalNeuralnetworksV1_0TargetTest on Angler
Change-Id: I721711e13575f56e956d87e3ad537467f85e93f4
1 file changed