Initialise repository structure and placeholder files. Generic functionality works i guess, need to come up with a better solution for compose templates

roles/ssh/defaults/main.yml

@@ -0,0 +1,9 @@
+---
+ssh_port: "{{ nbops_ssh_port }}"
+ssh_permit_root_login: "no"
+ssh_password_authentication: "no"
+ssh_kbd_interactive_authentication: "no"
+ssh_pubkey_authentication: "yes"
+ssh_use_dns: "no"
+ssh_x11_forwarding: "no"
+