message: Remove whitespace characters from tf_cuda_compute_capabilities user string
  Remove all whitespace characters from the user specified tf_cuda_compute_capabilities string as this can results in errors during the split operation, and is easy for users to do as it is natural to insert a space after a comma
diff: @@ -1226,6 +1226,9 @@ def set_tf_cuda_compute_capabilities(environ_cp):
  ask_cuda_compute_capabilities, default_cuda_compute_capabilities)
  # Check whether all capabilities from the input is valid
  all_valid = True
  + # Remove all whitespace characters before splitting the string
  + # that users may insert by accident, as this will result in error
  + tf_cuda_compute_capabilities = ''.join(tf_cuda_compute_capabilities.split())
  for compute_capability in tf_cuda_compute_capabilities.split(','):
  m = re.match('[0-9]+.[0-9]+', compute_capability)
  if not m:
  