Set quota project ID and inheritance on top-level storage directory.

When creating external storage directories like /data/media/0, make sure
we set the quota project ID correctly, and enable project ID
inheritance. This ensures that all directories/files under this will be
created with the correct project ID and inheritance as well.

Bug: 146419093
Test: lsattr -p on /data/media
Change-Id: I32bfced0d67eb8c1865897b085324f00c55926a0