gem_close_race: Bump the workload
gem_close_race: Bump the workload

Emit more work per client and many more clients in order to increase the
chance of racing i915_gem_release() and i915_gem_retire_requests()

dlespiau/checkmate-test-igt,chenxianqin/intel-gpu-tools,yipdw/intel-gpu-tools,chenxianqin/intel-gpu-tools,rib/intel-gpu-tools,chenxianqin/intel-gpu-tools,dlespiau/checkmate-test-igt,yipdw/intel-gpu-tools,mv0/intel-gpu-tools,mv0/intel-gpu-tools,erikarn/intel-gpu-tools,erikarn/intel-gpu-tools,yipdw/intel-gpu-tools,rib/intel-gpu-tools,mv0/intel-gpu-tools,tiagovignatti/intel-gpu-tools,rib/intel-gpu-tools,rib/intel-gpu-tools,dlespiau/checkmate-test-igt,erikarn/intel-gpu-tools,mv0/intel-gpu-tools,tiagovignatti/intel-gpu-tools,tiagovignatti/intel-gpu-tools,dlespiau/checkmate-test-igt,tiagovignatti/intel-gpu-tools,chenxianqin/intel-gpu-tools,erikarn/intel-gpu-tools,yipdw/intel-gpu-tools