Fix Android Keystore key factories to obey JCA contract.

Android Keystore provider's KeyFactory and SecretKeyFactory
implementations were throwing UnsupportedOperationException instead of
InvalidKeyException/InvalidKeySpecException from their
translateKey/generateKey methods.

Bug: 22459811
Change-Id: I6d5a5dc1bed724e858ad324d558b7480b9b848da
2 files changed