adding setup role

roles/setup/templates/passwd.client.j2

@@ -0,0 +1,8 @@
+# password file used when the local exim is authenticating to a remote
+# host as a client.
+#
+# see exim4_passwd_client(5) for more documentation
+#
+# Example:
+### target.mail.server.example:login:password
+*:{{smtp_auth_user}}:{{smtp_auth_pass}}