Log keystore key operation events using statsd.

This is the second CL on migrating keystore logging to statsd.
This migrates the logging for key operation events.
Three new ResponseCodes are added for the logging purpose of the
	abort operations.

Test: Adding tests for logging is yet to be decided.
Change-Id: I68c1d89beeb733e4b6ba493b8d95935b7e73df60
Bug: 157664923
diff --git a/keystore/Android.bp b/keystore/Android.bp
index b41ad18..eb0009f 100644
--- a/keystore/Android.bp
+++ b/keystore/Android.bp
@@ -35,6 +35,7 @@
         "confirmation_manager.cpp",
         "grant_store.cpp",
         "key_creation_log_handler.cpp",
+        "key_operation_log_handler.cpp",
         "key_store_service.cpp",
         "keyblob_utils.cpp",
         "keymaster_enforcement.cpp",
@@ -43,8 +44,6 @@
         "keystore_utils.cpp",
         "legacy_keymaster_device_wrapper.cpp",
         "operation.cpp",
-        "operation_config.proto",
-        "operation_proto_handler.cpp",
         "permissions.cpp",
         "user_state.cpp",
     ],