Add the atom definition to log keystore2 storage statistics.

This CL adds the atom definition for logging keystore2 storage
statistics.

Bug: 180521914
Test: test_drive_script
Merged-In: Iab41ddc6e965e46cac87b0b9f122b43cb8cbf030
Change-Id: Iab41ddc6e965e46cac87b0b9f122b43cb8cbf030
1 file changed
tree: 365c1960dadcbe217d88db75952ed0ce1093b597
  1. stats/
  2. OWNERS