feat(ansible): add semaphore docker splash demo with dagster config

ansible-semaphore-docker-demo/ansible.cfg

@@ -0,0 +1,20 @@
+[defaults]
+inventory = ./inventory
+host_key_checking = False
+stdout_callback = default
+callback_result_format = yaml
+force_color = True
+retry_files_enabled = False
+gathering = smart
+roles_path = ./roles
+
+[privilege_escalation]
+become = True
+become_method = sudo
+become_user = root
+become_ask_pass = False
+
+[ssh_connection]
+timeout = 30
+pipelining = True
+control_path = /tmp/ansible-ssh-%%h-%%p-%%r