init: Update bugreport service definition

```
host_init_verifier: vendor/lineage/prebuilt/common/etc/init/init.lineage-system_ext.rc: 6: No user specified for service 'bugreport', so it would have been root.
host_init_verifier: Failed to parse init scripts with 1 error(s).
```

Change-Id: I0bd03cb673096f1e686ede59c7db70ab1e581ec1

prebuilt/common/etc/init/init.lineage-system_ext.rc

@@ -4,6 +4,9 @@ on init
 
 # bugreport is triggered by holding down volume down, volume up and power
 service bugreport /system/bin/dumpstate -d -p -z
-    oneshot
+    socket dumpstate stream 0660 shell log
+    class main
+    user root
     disabled
+    oneshot
     keycodes 114 115 116