[IAM Credentials Migration] [Code build & CR package] Update the codebuild spec to use the IAM role created to replace the credentials from secret manager

[rajeshvenkata]

Update the codebuild spec to use the IAM role created to replace "packages-e2e". Look for the packages_ci_beta:aws_access_key_id and packages_ci_beta:aws_secret_access_key_id

Update the codebuild spec to use the IAM role created to replace "non-regional-packages-e2e". Look for the packages_ci_beta:non_regional_aws_access_key_id and packages_ci_beta:non_regional_aws_secret_access_key_id

Update the codebuild spec to use the IAM role created to replace "cert-manager-e2e". Look for the packages_ci_beta:route53_access_key_id and packages_ci_beta:route53_secret_access_key

Refer to https://repost.aws/knowledge-center/codebuild-temporary-credentials-docker for details on how to use the credentials from IAM role