stopSelf() if there is no installed system image

On BOOT_COMPLETED, the installation checks if there is an installed
system image and shows a notification if there is.

However, if there isn't. The installation should stop itself.

Bug: 128960337
Test: boot and adb shell ps
Change-Id: I422e308020cd5ec127ea265079926c1b74547d4b

packages/DynamicSystemInstallationService/src/com/android/dynandroid/DynamicSystemInstallationService.java

@@ -326,6 +326,8 @@ public class DynamicSystemInstallationService extends Service
         } else if (status == STATUS_READY) {
             startForeground(NOTIFICATION_ID,
                     buildNotification(STATUS_READY, CAUSE_NOT_SPECIFIED));
+        } else {
+            stopSelf();
         }
     }