Run zipfuse in microdroid

zipfuse now runs in microdroid as a service. The source zip file path
and the mount point are fixed to /dev/block/by-name/microdroid-apk and
/mnt/apk, respectively.

To support that, microdroid_payload.json is amended to add
MicrodroidTestAppk.apk to the payload.img file. This eventually should
be done dynamically by the virt manager.

Bug: 186377508
Test: atest MicrodroidHostTestCases
Change-Id: I7a031ad442995dbd3cdc00a51a0e939c1589a7b2
diff --git a/zipfuse/Android.bp b/zipfuse/Android.bp
index 845508c..24cfaa0 100644
--- a/zipfuse/Android.bp
+++ b/zipfuse/Android.bp
@@ -26,6 +26,7 @@
 rust_binary {
     name: "zipfuse",
     defaults: ["zipfuse.defaults"],
+    init_rc: ["zipfuse.rc"],
 }
 
 rust_test {