[attestation] Allow virtualizationservice to retrieve keys

From RKPD.

Test: Run ServiceVmClientTestApp manually
Change-Id: I8831627318030745355f8d527e449a177e5db18f
diff --git a/private/virtualizationservice.te b/private/virtualizationservice.te
index 4d8ac6b..972f376 100644
--- a/private/virtualizationservice.te
+++ b/private/virtualizationservice.te
@@ -29,6 +29,10 @@
 binder_call(virtualizationservice, system_server)
 allow virtualizationservice permission_service:service_manager find;
 
+# Allow virtualizationservice to retrieve the remotely provisioned keys from rkpd.
+binder_call(virtualizationservice, remote_provisioning_service)
+allow virtualizationservice remote_provisioning_service:service_manager find;
+
 # Let virtualizationservice remove memlock rlimit of virtualizationmanager. This is necessary
 # to mlock VM memory and page tables.
 allow virtualizationservice self:capability sys_resource;