adding remote folder to shell provisioners scripts

[maiconrocha]

Issue #, if available:
This is to fix an issue when applying EKS scripts on top of CIS_Amazon_Linux_2023_Benchmark_Level_1 AMI
Description of changes:

adding remote folder to shell provisioners scripts on template.json
When not having the option to add remote folder to shell provisioners scripts, scripts are created on /tmp
which is does not have required permissions on CIS_Amazon_Linux_2023_Benchmark_Level_1 AMI.
So you will face errors like:

2024-08-12T10:32:11+09:30: ==> amazon-ebs: Provisioning with shell script: /var/folders/2p/4n7c7gqs6xb23jgy_sq_3gsh0000gr/T/packer-shell2244599818
2024-08-12T10:32:12+09:30:     amazon-ebs: bash: line 1: /tmp/script_4590.sh: Permission denied

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Testing Done

I am able to build an AMI after the changes with the following command

make k8s=1.30 os_distro=al2023 aws_region=ap-southeast-2 source_ami_id=ami-XXXXXXXXX source_ami_owners=XXXXXXXXX source_ami_filter_name="CIS Amazon Linux 2023 Benchmark - Level 1 - v07 -prod-fvm47vekg24oc" subnet_id=subnet-XXXXXXXXX associate_public_ip_address=true remote_folder=/home/ec2-user working_dir=/home/ec2-user
...
==> Builds finished. The artifacts of successful builds are:
--> amazon-ebs: AMIs were created:
ap-southeast-2: ami-XXXXXXXXXXXXXXXXXX

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[cartermckinnon]

Does Packer leave behind all the scripts it uploads to the remote_folder? It'd be nice to clean them up if /home/ec2-user is going to be used as remote_folder

[maiconrocha]

I basically replicated what we have on AL2
https://github.com/awslabs/amazon-eks-ami/blob/main/templates/al2/template.json
you can see remote_folder option is on all shell provisioners.
I will launch an instance using the generated AMI and check /home/ec2-user content to see if it was cleanup by packer.

[maiconrocha]

I confirmed that /home/ec2-user/ is clean when connecting to the Instance using the generated AMI:

sh-5.2$ sudo su -
[root@ip-10-0-9-125 ~]# cd /home/ec2-user/
[root@ip-10-0-9-125 ec2-user]# ls -ltrh
total 0

[maiconrocha]

@cartermckinnon any chance you can approve this PR and merge with updated template.json?