ReadOnlyRootFileSystem changes for AWS

commit 6584a46b Author: Abhay bios@amazon.com Date: Tue Mar 21 2023 08:40:01 GMT-0700 (Pacific Daylight Time)

removing old ssl stuff

commit d6d80ec7 Author: Abhay bios@amazon.com Date: Tue Mar 21 2023 07:29:05 GMT-0700 (Pacific Daylight Time)

Renaming variable

commit a2ef5304 Author: Abhay bios@amazon.com Date: Mon Mar 20 2023 10:44:26 GMT-0700 (Pacific Daylight Time)

adding changes for rootFilesystem

(cherry picked from commit 31267f74)

changed milestone to %M18 - Release 0.21

added AWS label

assigned to @fhoueto.amz and @bios

mentioned in commit 5e5d3e80

merged