Handle RuntimeError thrown by CUDA Python in validate_setup

[shwina]

The call to getDeviceCount() can raise a RuntimeError when libcuda.so is missing. We should handle that too in validate_setup().

[codecov]

Codecov Report

Merging #10653 (bf9f6f7) into branch-22.06 (26c1810) will increase coverage by 0.07%.
The diff coverage is 0.00%.

@@               Coverage Diff                @@
##           branch-22.06   #10653      +/-   ##
================================================
+ Coverage         86.31%   86.39%   +0.07%     
================================================
  Files               140      142       +2     
  Lines             22280    22318      +38     
================================================
+ Hits              19232    19281      +49     
+ Misses             3048     3037      -11     

Impacted Files	Coverage Δ
python/cudf/cudf/utils/gpu_utils.py	50.00% <0.00%> (-4.29%)	⬇️
python/cudf/cudf/core/frame.py	93.54% <0.00%> (-1.22%)	⬇️
python/dask_cudf/dask_cudf/tests/test_binops.py	92.00% <0.00%> (-0.60%)	⬇️
python/cudf/cudf/core/reshape.py	89.82% <0.00%> (-0.27%)	⬇️
python/dask_cudf/dask_cudf/core.py	73.36% <0.00%> (-0.27%)	⬇️
python/cudf/cudf/comm/gpuarrow.py	79.76% <0.00%> (-0.24%)	⬇️
python/cudf/cudf/core/series.py	95.15% <0.00%> (-0.13%)	⬇️
python/cudf/cudf/core/cut.py	82.69% <0.00%> (ø)
python/cudf/cudf/utils/ioutils.py	79.60% <0.00%> (ø)
python/cudf/cudf/core/column/column.py	89.45% <0.00%> (ø)
... and 16 more

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[shwina]

@gpucibot merge