[rpc_binder] Use RPC binder over UDS for vm_payload_service

Test: atest MicrodroidTests ComposHostTestCases
Bug: 222479468
Change-Id: I61f82f6e2c93b7cf2793c1a812cddc0436c33d82
diff --git a/microdroid_manager/microdroid_manager.rc b/microdroid_manager/microdroid_manager.rc
index 74a219d..cfa70bd 100644
--- a/microdroid_manager/microdroid_manager.rc
+++ b/microdroid_manager/microdroid_manager.rc
@@ -6,3 +6,4 @@
     oneshot
     # SYS_BOOT is required to exec kexecload from microdroid_manager
     capabilities AUDIT_CONTROL SYS_ADMIN SYS_BOOT
+    socket vm_payload_service stream 0666 system system