Bind mount install and android writable DATA and OBB dirs

To improvement performance, and also making them able to list
the dirs.

This should also be fine under b/151055432, as the whole obb
directory is mounted, renameTo() from installer to apps should be
a move not copy.

Bug: 153422990
Bug: 153540919
Test: atest AdoptableHostTest
Change-Id: Ia18fd4393db14a0f11d6e5b947dd716515bdeeef
2 files changed