Fix Keymaster VTS unique attestation failure

Adding TAG_DEVICE_UNIQUE_ATTESTATION & CheckedDeleteKey()
in TEST_P(DeviceUniqueAttestationTest, NonStrongBoxOnly)
Test procedure:
1.Build APP "VtsHalKeymasterV4_1TargetTest" in android project,
then replace it to VTS testcase(version in 0610).
2. ./vts-tradefed
3.run vts -m VtsHalKeymasterV4_1TargetTest
Result:all testcase pass

Bug: 158724430
Test: m VtsHalKeymasterV4_1TargetTest && echo run vts -m VtsHalKeymasterV4_1TargetTest | ./vts-tradefed

Change-Id: I693c23596a045bf9af9fe6cc483924fd7cfc6ce6