Add missing Keystore error metadata

The last two error codes that were added to `ResponseCode` in the
`IKeystoreService` AIDL interface did not get mappings to error
metadata.

Test: CtsKeystoreTestCases
Bug: 400439023
Flag: EXEMPT bug fix
Change-Id: Ib3d6f4e42cbe25923c1951db38f73407c636b9ec