[Reduce Manual Work] Modify tests

[fengzhou-msft]

Issues:

1. Many example values cannot be used as test values for arguments in CLI. They may be placeholders or invalid values. For instance: --resource-group "{rg}", --zones "earth" "moon", --factory-resource-id "/subscriptions/{subscription_id}/resourceGroups/{rg}/providers/Microsoft.DataFactory/factories/{myFactory}" Check this example test.
2. You may need to use the output from one command as the input in another command in tests. For instance: --ids needs to get ids from a create/show command first.

Impact:
A lot of effort is spent in fixing and running tests.