microdroid_manager: start zipfuse early

Microdroid_manager orchestrates sub tasks with more explicit
events.
- starts zipfuse after APK verification is done & before reading config
  from payload.
- executes payload after apex_config is done.

Bug: n/a
Test: MicrodroidHostTestCases
Change-Id: I3bd7adf97b3aaa6709aea516d41d6c9002025207
diff --git a/zipfuse/Android.bp b/zipfuse/Android.bp
index 46f4b5a..79e6bad 100644
--- a/zipfuse/Android.bp
+++ b/zipfuse/Android.bp
@@ -29,6 +29,7 @@
     name: "zipfuse",
     defaults: ["zipfuse.defaults"],
     init_rc: ["zipfuse.rc"],
+    bootstrap: true,
 }
 
 rust_test {