Add OOD proxy node deployment to CI/CD pipeline

• 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

.gitlab-ci.yml

@@ -54,7 +54,7 @@ deploy_ood_proxy_node:
       openstack server create \
         --image $PKR_VAR_source_image \
         --flavor $PKR_VAR_flavor \
-        --network $PKR_VAR_networks \
+        --network $OOD_INSTANCE_NETWORK \
         --wait \
         $OOD_PROXY_NAME
     - PROXY_INSTANCE_ID=$(openstack server show -f value -c id $OOD_PROXY_NAME)