OpenCL 3.0 CL_SAMPLER_PROPERTIES tests. (#858)
OpenCL 3.0 CL_SAMPLER_PROPERTIES tests. (#858)

* OpenCL 3.0 CL_SAMPLER_PROPERTIES tests.

* Test CL_SAMPLER_PROPERTIES - fix misspelling

* Test CL_SAMPLER_PROPERTIES - fix results verification
KhronosGroup/OpenCL-CTS,KhronosGroup/OpenCL-CTS,KhronosGroup/OpenCL-CTS,KhronosGroup/OpenCL-CTS