Add missing response to Redis tcp-check in HAProxy

HAProxy Redis configuration contains the tcp-check section.
That tcp-check section is missing authentication response.

Auth request:
    > tcp-check send AUTH\ password\r\n

Should be followed by:
    > expect string +OK

This make sure we won't continue when auth was not suncesful.

Change-Id: Ia4d615a2a038f0b2e5e33f4b0eabe7f777a74145
Closes-Bug: #1843535

manifests/haproxy.pp

@@ -1470,7 +1470,8 @@ class tripleo::haproxy (
       $redis_ssl_member_options = []
     }
     if $redis_password {
-      $redis_tcp_check_password_options = ["send AUTH\\ ${redis_password}\\r\\n"]
+      $redis_tcp_check_password_options = ["send AUTH\\ ${redis_password}\\r\\n",
+                                            'expect string +OK']
     } else {
       $redis_tcp_check_password_options = []
     }