Fix pass condition for atomic usage tests

Fix pass condition for atomic usage tests

Any vertex processing shader could be called an implementation defined
number of times.

OpenGL 4.6 spec, "11.1.3 Shader Execution":

"Implementations are allowed to skip the execution of certain shader
 invocations, and to execute additional shader invocations for any shader
 type during programmable vertex processing due to implementation dependent
 reasons, including the execution of shader invocations that do not have an
 active program object present for the particular shader stage, as long as
 the results of rendering otherwise remain unchanged [...]"

Components: OpenGL

Affects: KHR-Single-GL4*.arrays_of_arrays_gl.AtomicUsage

Change-Id: I14385afa1de874c6f0fa21fe2a6ad73cb4ff0e7d