Allow robustness tests on GLES 3.0
Allow robustness tests on GLES 3.0

Allow selected robustness tests run on GLES 3.0 instead of always
requiring 3.1.

Affects: dEQP-EGL.functional.robustness.*
Bug: 36428911
Test: dEQP-EGL.functional.robustness.* on Pixel XL

Change-Id: I78f543dcd667b5121f61150b082fd4a4a9c14b23

googlestadia/VK-GL-CTS,chadversary/deqp,KhronosGroup/Vulkan-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/Vulkan-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/Vulkan-CTS,chadversary/deqp,chadversary/deqp,googlestadia/VK-GL-CTS,KhronosGroup/VK-GL-CTS,KhronosGroup/Vulkan-CTS,chadversary/deqp,chadversary/deqp,googlestadia/VK-GL-CTS,googlestadia/VK-GL-CTS,KhronosGroup/VK-GL-CTS,googlestadia/VK-GL-CTS,googlestadia/VK-GL-CTS,KhronosGroup/Vulkan-CTS,chadversary/deqp,KhronosGroup/VK-GL-CTS