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/Android.bp b/keystore2/Android.bp
index 9dc34d2..0069f95 100644
--- a/keystore2/Android.bp
+++ b/keystore2/Android.bp
@@ -35,6 +35,7 @@
         "android.security.authorization-rust",
         "android.security.compat-rust",
         "android.security.maintenance-rust",
+        "android.security.metrics-rust",
         "android.security.remoteprovisioning-rust",
         "android.system.keystore2-V1-rust",
         "libanyhow",
@@ -54,9 +55,6 @@
         "liblog_rust",
         "librand",
         "librusqlite",
-        "libstatslog_rust",
-        "libstatslog_rust_header",
-        "libstatspull_rust",
         "libthiserror",
     ],
     shared_libs: [