Revert "disable gpu Canny and HoughCircles perf tests:"

This reverts commit dbce90692acd84fbf46bde4da4b1726049f42857.
fixed several bugs in CUDA Canny implementation:

* out of border access in edgesHysteresisLocalKernel
* incorrect usage of atomicAdd
Merge pull request #2303 from jet47:gpu-canny-fix