add default for ztp_provisioning_script (#382)

Co-authored-by: Stefan Majer <[email protected]>

Author: iljarotar

partition/roles/ztp/defaults/main/main.yaml

@@ -7,6 +7,7 @@ ztp_admin_user: admin
 ztp_listen_address: "{{ ansible_host }}"
 ztp_port: 8080
 
+ztp_provisioning_script:
 ztp_additional_files: []
 # - name: foo.sh
 #   data: echo