ebd964a086
This patch adds a shim around the Keystore 2.0 AIDL spec. The new shim is modularized like the AIDL spec into the base Keystore module Keystore2, the security level specific interface KeystoreSecurityLevel, and the operation specific interface KeystoreOperation. Other system maintenance specific interfaces have yet to be added. Bug: 159476414 Bug: 171305684 Test: None Change-Id: I070f73739e4b37ce10568939ac666e40b14a52a8