enable piplining, sudo by default

ansible.cfg

@@ -1,4 +1,11 @@
 [defaults]
 roles_path=roles/internal:roles/external
 vault_password_file=.vault-password
-host_key_checking = False
+host_key_checking = False
+
+[privilege_escalation]
+become=True
+
+[ssh_connection]
+pipelining=True
+