Refactored CtsVoiceSettingsTestCases to use SettingsStateChangerRule.

Bug: 140063828
Test: atest CtsVoiceSettingsTestCases
Test: disable Google app and then run cts -m CtsVoiceSettingsTestCases
Change-Id: I39d07bfe0a6ebd0ffab22f831c6d75d061584438
5 files changed