Subzero: Fix a bug in cross test generation.
Subzero: Fix a bug in cross test generation.

The attribute matching logic was wrong.  If you specify the exact set of attributes, i.e. for a single test, no match would be found due to the < instead of <= test.

BUG= none
R=jvoung@chromium.org

Review URL: https://codereview.chromium.org/1020473002

bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader