add more wiggle room to harvest slowest, since it still fails intermi…

…ttently.

test/new_relic/agent/transaction_sampler_test.rb

@@ -740,7 +740,7 @@ def test_harvest_slowest
     run_sample_trace
 
     slowest = @sampler.harvest(nil, 0)[0]
-    assert((slowest.duration >= 0.1), "expected sample duration >= 0.1, but was: #{slowest.duration.inspect}")
+    assert((slowest.duration >= 0.09), "expected sample duration >= 0.09, but was: #{slowest.duration.inspect}")
     # this assert is here to make sure the test remains valid
     assert((slowest.duration <= 0.15), "expected sample duration <= 0.15, but was: #{slowest.duration.inspect}")
 
@@ -749,7 +749,7 @@ def test_harvest_slowest
     not_as_slow = @sampler.harvest(slowest, 0)[0]
     assert((not_as_slow == slowest), "Should re-harvest the same transaction since it should be slower than the new transaction - expected #{slowest.inspect} but got #{not_as_slow.inspect}")
 
-    run_sample_trace { sleep 0.15 }
+    run_sample_trace { sleep 0.16 }
     new_slowest = @sampler.harvest(slowest, 0)[0]
     assert((new_slowest != slowest), "Should not harvest the same trace since the new one should be slower")
     assert((new_slowest.duration >= 0.15), "Slowest duration must be >= 0.15, but was: #{new_slowest.duration.inspect}")