Updating allowed keymaster attestation versions

With the addition of Keymaster 4.1, an attestation version of 4 must also
be added to the list of accepted attestation versions.

Bug: 149746301
Bug: 163336591
Test: atest KeyAttestationTest
Change-Id: Ia38a32bf6d47e8f44e03e816058dbe1ece784f0f
1 file changed