Ecs impl changes

commit a4f9f3b0 Author: Matt Wise wsmatth@amazon.com Date: Thu Aug 13 2020 14:30:16 GMT-0500 (Central Daylight Time)

Update license/copyright in modified files

commit 030d8c4f Author: Rucha deshpande deshruch@amazon.com Date: Sun Aug 09 2020 16:08:08 GMT-0500 (Central Daylight Time)

entitlements update