Merge changes I7f7c3a3b,I513eccac,Idfc5ea50,I59cccf70,I18c5a305, ... into gce-dev

* changes:
  Make vm_manager configurable on the command line
  Don't abort, return nullptr instead, when config file isn't present
  Make stop_cvd ask the launcher to stop
  Adds the process monitor to the launcher
  Launcher prints success message before exiting when in daemon mode
  Put a link to the config file in the home directory
tree: 87ee39f21db4781a033fd177b3c1ff0886b13229
  1. common/
  2. guest/
  3. host/
  4. tests/
  5. tools/
  6. Android.bp
  7. Android.mk
  8. OWNERS