(packer-images): Add Garbage Collector for AWS

[jayfranco999]

Due to the complexity of this PR – jenkins-infra/packer-images#1430

We are splitting the tasks into 4 stages, this issue is related to handling the Garbage collector scripts foe old AWS AMI Images.

We are reintroducing the amazon login that we were using with our previous AWS jenkins account – jenkins-infra/packer-images#734

• Cleanup AWS images – ensure staging images older than 7 days are removed
• Cleanup AWS images – collect EC2 snapshots older than 1 year on us-east-2
• Cleanup AWS images – add aws.sh as daily cleanup task

Originally posted by @jayfranco999 in #4316 (comment)

[dduportal]

Update:

• We need a distinct job for garbage collection of packer-images (ref. https://github.com/jenkins-infra/kubernetes-management/blob/main/config/jenkins-jobs_infra.ci.jenkins.io.yaml) with:
  • Custom Jenkinsfile
  • Its own set of credentials (reuse the same as the principal job for now)
  • no tag discovery
• Once successfull, update the principal Jenkinsfile_k8s pipeline to remove Garbage collection from it