Document need for user to create directory ansible/output/vault.

[mikej888]

Running playbook monolithic_mk8s_example/1-vm-setup-and-deploy.yaml failed at:

$ ansible-playbook -i vmware-host.yaml 1-vm-setup-and-deploy.yaml
...
TASK [dare.common.vault_init_config : save the vault root token and unseal keys to a file] **********
fatal: [single_host -> localhost]: FAILED! => {"changed": false, "checksum": "70374248fd7129088fef42b8f568443f6dce3a48", "msg": "Destination directory /home/mjj/DARE-SeRP-Dev-Deployment/ansible/output/vault does not exist"}

The failure occurs within: ~/.ansible/collections/ansible_collections/dare/common/roles/vault_init_config/tasks/init.yml at:

- name: save the vault root token and unseal keys to a file
  local_action: copy content="{{ vault_init }}" dest={{ vault_config_output_folder }}/root-unseal.json

A fix is to create the missing directory manually on the control VM:

$ cd DARE-SeRP-Dev-Deployment/ansible
$ mkdir -p output/vault

Alternatively, if possible, have the task create the directory.