Save package dex usage info after secondary dex reconciliation

Bug: 1833991
Test: add a bogus entry to /syste/data/package-dex-usage.list
      adb shell cmd package reconcile-secondary-dex-files
com.android.google.gms
      wait a bit and check the bogus entry is gone

(cherry picked from commit b1097411)

Change-Id: I23248b11ea07bceb6527f55bf62618d1b2c3d83d

Merged-In: Ic07126bfb8730933081a5e010e3c357d338786e8