[dev] Adjust GPU naming policy (bug 13081)

lib/refrepo/gen/oar-properties.rb

lib/refrepo/gen/wiki/generators/hardware.rb

lib/refrepo/gen/wiki/generators/site_hardware.rb

lib/refrepo/gpu_ref.rb

spec/output/bad_best_effort_property_diff_stdout.txt

spec/output/bad_best_effort_property_print_stdout.txt

spec/output/chassis_unset_diff_stdout.txt

spec/output/chassis_unset_print_stdout.txt

spec/output/configured_misconfigured_cores_diff_stdout.txt

spec/output/configured_misconfigured_cores_print_stdout.txt

spec/output/configured_misconfigured_gpu_diff_stdout.txt

spec/output/configured_misconfigured_gpu_print_stdout.txt

...put/configured_missing_network_interfaces_diff_stdout.txt

...ut/configured_missing_network_interfaces_print_stdout.txt

spec/output/configured_with_disk_diff_stdout.txt

spec/output/configured_with_disk_print_stdout.txt

spec/output/configured_without_gpu_diff_stdout.txt

spec/output/configured_without_gpu_print_stdout.txt

spec/output/different_value_wattmeters_diff_stdout.txt

spec/output/different_value_wattmeters_print_stdout.txt