Declare the implicit outputs for r8RE

The implicit outputs created by r8 (e.g. art profile) was added to the
non RE rule, but not to the RE one.

Test: Created a go/abtd run with SystemUI profile guided dexpreopt
https://android-build.corp.google.com/builds/abtd/run/L92900030004716290
Test: Verified that the .odex size of SystemUI on RE builds matches non
RE builds
https://screenshot.googleplex.com/6kLCXdBzzVWW3s8

Change-Id: Ie03a7f7896170b36ce83360eaf260cd3765a3fd7