fix race in app blocking during bootup

- there were race between app monitoring and policy init
  as policy init was done in separate thread.
- enable activity launching monitoring only after initial
  policy is set.
- When initial policy is set, block top activities if necessary.
- also add dump of default white list string
- also add android to default whitelist

bug: 31931861
Change-Id: I36e03d01023b73ff617ed712140db3742b187873
2 files changed