Change GPU test for Cray systems

Do not test for CUDA environment variable on Cray system

testsuite/expect/test1.62

@@ -95,6 +95,11 @@ proc run_gpu_test { gres_cnt } {
 
 print_header $test_id
 
+if {[test_cray]} {
+	send_user "\nWARNING: This test is incompatible with Cray systems\n"
+	exit $exit_code
+}
+
 #
 # Test if gres/gpu is configured
 #