Settings performance testing

1. Add percentile tags.
2. Fill 0 to avg, max, min and percnetiles when we detected result array
not equals to TEST_TIME.
3. Write error message to log when above situation occurred.

Test: atest SettingsPerfTests:LaunchSettingsTest
Change-Id: I2fe72a9289d8d2c6cccd6ae52156df3b31934516
1 file changed