Add keystore API for metrics re-routing.

Keystore2 atoms need to be routed to statsd via a proxy.
The proxy needs to call this API in order to pull metrics from
keystore.

Bug: 188590587
Test: Statsd Testdrive script
Merged-In: I28f8675fe5467b0760418c4d2d87808e45657be1

Change-Id: I28f8675fe5467b0760418c4d2d87808e45657be1
diff --git a/keystore2/src/operation.rs b/keystore2/src/operation.rs
index 1d595b3..7e08f4e 100644
--- a/keystore2/src/operation.rs
+++ b/keystore2/src/operation.rs
@@ -127,7 +127,7 @@
 
 use crate::enforcements::AuthInfo;
 use crate::error::{map_err_with, map_km_error, map_or_log_err, Error, ErrorCode, ResponseCode};
-use crate::metrics::log_key_operation_event_stats;
+use crate::metrics_store::log_key_operation_event_stats;
 use crate::utils::watchdog as wd;
 use android_hardware_security_keymint::aidl::android::hardware::security::keymint::{
     IKeyMintOperation::IKeyMintOperation, KeyParameter::KeyParameter, KeyPurpose::KeyPurpose,