Adds test_list_XX_fields cases to list some fields

This change adds test_list_XX_fields cases to test
if listing some fields works well. A related url
example is 'v2.0/networks.json?fields=id'.

Change-Id: Ic41d83ec394b6bd7767d0523a8b21614468e0f6a
Add to whitelist two errors that slipped through

Change-Id: I0347074735359d33f294d1ededc45149a29157ec
Merge "Add to whitelist two errors that slipped through"
Merge "Adds test_list_XX_fields cases to list some fields"