This is follow up of I8a5e868e0adc2c7b6f46f56ee77a8129c34badb9,
need remove enforce_type from test method's name. This commit
also remove test_enforce_type_default_override which is duplicated
with test_default_override.
Change-Id: Ibc7661993247d0510a08c4a890ba7476be8a32b0