- Fixed the floating IP column name to 'Floating IP Address' in `openstack floating ip list`

- Added validation to check if `PROXY_IP` is set before attempting to assign it

- Updated the `rules` section to be an array containing hashes and arrays of hashes

- Updated deploy_ood_proxy_node script to retrieve PROXY_INSTANCE_ID directly using `openstack server create` with `--format value --column id`
- Added debug logging to output the created instance ID
- Simplified instance creation and floating IP assignment process

This update includes:
Adding the default image configuration at the top of the file.
Including a comprehensive set of variables, including environment-specific configurations, PKR variables, and SSH keys.
Keeping the existing deploy_ood_proxy_node job unchanged.

- Introduce new job 'deploy_ood_proxy_node' in deploy stage
- Create OOD proxy server using existing OOD image
- Attach proxy to knightly network
- Assign floating IP to proxy instance
- Store proxy instance ID as artifact for potential future use
- Update variables section with OOD proxy related configurations

Fix centos yum repo

See merge request rc/packer-openstack-hpc-image!89

Add timestamps in user date

See merge request rc/packer-openstack-hpc-image!88

Fix integration project separation

Closes #116

See merge request rc/packer-openstack-hpc-image!87