File _keg_revisions of Package SLES15-SP5-EC2-ECS-HVM

https://github.com/SUSE-Enceladus/keg-recipes.git 140f00c91209e905bc5f69a44e676283b69717c4
https://gitlab.suse.de/public-cloud/keg-recipes-private.git 2ea9448ca533d6479247883da016ccdafe90f097