All 4.4.0 kernels on AWS:

The build node:

$ uname -a

Linux build-slave 4.4.0-1073-aws #83-Ubuntu SMP Sat Nov 17 00:26:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

The p4proxy:

$ uname -a

Linux aws-p4proxy-asg 4.4.0-1069-aws #79-Ubuntu SMP Mon Sep 24 15:01:41 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

The build replica:

$ uname -a

Linux metalorn 4.4.0-1067-aws #77-Ubuntu SMP Mon Aug 27 13:22:03 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux