[rkp] Retrieve attestation key from rkpd

The attestation keys are passed to the RKP VM together with
the client VM CSR for attestation.
The key retrieval only occurs when the remote_attestation
feature flag is enabled.

Bug: 241428146
Test: m com.android.virt
Test: atest libservice_vm_requests.test rialto_test
Change-Id: I285f9b53104f1240863c0e36007b3db0b2af23aa
diff --git a/virtualizationservice/Android.bp b/virtualizationservice/Android.bp
index c00445d..bef7dd0 100644
--- a/virtualizationservice/Android.bp
+++ b/virtualizationservice/Android.bp
@@ -34,6 +34,7 @@
         "liblibc",
         "liblog_rust",
         "libnix",
+        "librkpd_client",
         "librustutils",
         "libvmclient",
         "libstatslog_virtualization_rust",