change yaml format to match others
Merge pull request #13 from commenthol/pgts-yaml-format

Change YAML format of pgts_browser_list.yaml to match others

This solely changes the YAML format of pgts_browser_list.yaml for consistency with other test files.
No additional testcases are being added, nor testcases are changed.
brand-model parsing with current test set
testcases brand model
test_device_brandmodel.yaml merged into test_device.yaml