Increase CtsNNAPITestCases timeout from 10m to 20m

10m was not sufficent for ValidateModelTest.MaskRCNN2Go when
doing tests code coverage evaluation on cf.

Bug: 150366578
Test: run mts/cts CtsNNAPITestCases on cf
Change-Id: Ida72a63d1ee40d28cc6adeef111d7899abfd43f0
diff --git a/tests/tests/neuralnetworks/AndroidTest.xml b/tests/tests/neuralnetworks/AndroidTest.xml
index 9454e93..b7894e5 100644
--- a/tests/tests/neuralnetworks/AndroidTest.xml
+++ b/tests/tests/neuralnetworks/AndroidTest.xml
@@ -28,7 +28,8 @@
         <option name="native-test-device-path" value="/data/local/tmp" />
         <option name="module-name" value="CtsNNAPITestCases" />
         <option name="runtime-hint" value="10m" />
-        <!-- test-timeout unit is ms, value = 10 min -->
-        <option name="native-test-timeout" value="600000" />
+        <!-- test-timeout unit is ms, value = 20 min (previous 10min was timing out 
+             in code coverage evaluations) -->
+        <option name="native-test-timeout" value="1200000" />
     </test>
 </configuration>