Keystore 2.0: add field upgradedBlob to CreateOperationResponse Add a nullable byte array "upgradedBlob" to CreateOperationResponse, so that keystore2 can return an upgraded key blob (if one exists) on calls to create_operation. Bug: 173546754 Bug: 181910578 Change-Id: Ie97c510db888c161987ace017f9c6375237832ac