fix: need var in stage 1 too

Author: samrose

ebssurrogate/scripts/surrogate-bootstrap-nix.sh

@@ -214,7 +214,10 @@ EOF
 	# Run Ansible playbook
 	#export ANSIBLE_LOG_PATH=/tmp/ansible.log && export ANSIBLE_DEBUG=True && export ANSIBLE_REMOTE_TEMP=/mnt/tmp 
 	export ANSIBLE_LOG_PATH=/tmp/ansible.log && export ANSIBLE_REMOTE_TEMP=/mnt/tmp
-	ansible-playbook -c chroot -i '/mnt,' /tmp/ansible-playbook/ansible/playbook.yml --extra-vars '{"nixpkg_mode": true, "debpkg_mode": false, "stage2_nix": false}' $ARGS
+	ansible-playbook -c chroot -i '/mnt,' /tmp/ansible-playbook/ansible/playbook.yml \
+	--extra-vars '{"nixpkg_mode": true, "debpkg_mode": false, "stage2_nix": false} ' \
+	--extra-vars "psql_version=psql_${POSTGRES_MAJOR_VERSION}" \
+	$ARGS
 }
 
 function update_systemd_services {