Make ARC / self-hosted runners work

We should make our ARC/ self-hosted runners infrastructure work back. We have an almost complete work by @hussein-awala to run self-hosted runners in our AWS account and we have 40K credits graciously donated by Amazon, so we should finally start making use of it and speed up our builds. Using huge self-hosted runner and parallelism will allow us to overcome the limitations in the FTR (number of parallel jobs we can run) for the Apache Software Foundation account, and plugging the new runners in with more CPU and memory could help us to handle some of our CI jobs 4x or 8x times faster. There are a few of the tasks (#41935, #4932, #41934) that depend on ARC being available