Investigate and document or fix all OpenCL CTS KNOWN_FAILUREs

[aarongreig]

All uses of the UUR_KNOWN_FAILURE_ON macro in the CTS should ideally be accompanied by a link to an issue, or, if the fail is due to something out of our control, an explanation as to why. This issue represents a quick collating of all the OpenCL KNOWN_FAILUREs, subtasks should be spun out to coordinate working on individual cases.

• FPGA emulator sampler fails
  • fixtures.h:208 fixtures.h:333 urSamplerCreate.cpp:14 urKernelSetArgSampler.cpp
• FPGA emulator fail in urDeviceGetGlobalTimestamps
• cfi sanitizer exclusive fail in urEnqueueEventsWaitMultiDevice.cpp
• igpu fails mem image size query in urMemGetInfo.cpp
• fpga + igpu both fail most or all formats in urMemImageCreateWithImageFormatParam.cpp
• fpga fails all (or at least most) tests in urMemImageCreate.cpp
• igpu fails InvalidSize test in urMemImageCreate.cpp
  • suspect this is a known driver issue
• need pool support query to skip POOL enum in urUSMGetMemAllocInfo.cpp
• most CL devices fail at urKernelGetGroupInfo.cpp:50
• igpu fail at urKernelSetArgValue.cpp:51
  • probably just lack of validation like the MemImageCreate fail
• all CL devices fail urKernelGetSubGroupInfo.cpp
  • maybe linked to urKernelGetGroupInfo fail?
• check why NUM_REGS being optional doesn't skip the test properly for CL in urKernelGetInfo.cpp