Rolls Back Changes from PR #32 That Break CS and OEL 9

[ferricoxide]

Reverts changes from #32 but keeps:

• Entirety of changes to PostBuild.sh
• Removal of init-script setup in AWSutils.sh

Closes #33

[ferricoxide]

Gets rid of the:

[  944.388690] systemd-rc-local-generator[43024]: /etc/rc.d/rc.local is not marked executable, skipping.

But the:

[  944.598280] systemd-sysv-generator[43028]: SysV service '/etc/rc.d/init.d/cfn-hup' lacks a native systemd unit file. Automatically generating a unit file for compatibility. Please update package to include a native systemd unit file, in order to make it more safe and robust.

Messages returns:

This has been referred to AWS to address (as have the alerts for /etc/rc.d/init.d/choose_repo and /etc/rc.d/init.d/rh-cloud-firstboot).

Removing the cfn-hup work-arounds does allow all AMIs to be built via CodeBuild:

(and)

$ aws ec2 describe-images \
    --filters 'Name=name,Values=spel-minimal-*9*' \
    --query 'sort_by(Images, &CreationDate)[? 
        Architecture == `x86_64` && 
        CreationDate >= `'"$(
          date -d "1 month ago" '+%Y-%m-%d'
        )"'`
      ].{CreationDate:CreationDate,Name:Name,ImageId:ImageId,BootMode:BootMode}' \
    --output table
-------------------------------------------------------------------------------------------------------------------------------------
|                                                          DescribeImages                                                           |
+----------------+---------------------------+------------------------+-------------------------------------------------------------+
|    BootMode    |       CreationDate        |        ImageId         |                            Name                             |
+----------------+---------------------------+------------------------+-------------------------------------------------------------+
|  uefi-preferred|  2024-10-23T11:34:10.000Z |  ami-005fcfdb47b931b4b |  spel-minimal-centos-9stream-hvm-2024.10.1b-01.x86_64-gp3   |
|  uefi-preferred|  2024-10-23T11:35:41.000Z |  ami-0ebce48689fe4ace2 |  spel-minimal-rhel-9-hvm-2024.10.1b-01.x86_64-gp3           |
|  uefi-preferred|  2024-10-23T11:38:23.000Z |  ami-021adb8048488b4bf |  spel-minimal-ol-9-hvm-2024.10.1b-01.x86_64-gp3             |
+----------------+---------------------------+------------------------+-------------------------------------------------------------+