REGTESTS: 4be_1srv_smtpchk_httpchk_layer47errors: Return valid SMTP replies

The s1 server is acting like a SMTP server. But it sends two CRLF at the end of
each line, while only one CRLF must be returned. It only works becaue both CRLF
are received at the same time.

(cherry picked from commit 330af2d7ed2d8d72800fc7761253ff6965681742)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 522bc42bdb17f1f7df3f807cb1eef82fed2f3267)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit e19871963b06a2cd9b0d761c08fc64b7e93c53b5)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
diff --git a/reg-tests/checks/4be_1srv_smtpchk_httpchk_layer47errors.vtc b/reg-tests/checks/4be_1srv_smtpchk_httpchk_layer47errors.vtc
index f9f37a1..fa862e7 100644
--- a/reg-tests/checks/4be_1srv_smtpchk_httpchk_layer47errors.vtc
+++ b/reg-tests/checks/4be_1srv_smtpchk_httpchk_layer47errors.vtc
@@ -36,12 +36,12 @@
     send "2"
     send "2"
     send "0"
-    send "\r\n\r\n"
+    send "\r\n"
     recv 16
     send "2"
     send "4"
     send "8"
-    send "\r\n\r\n"
+    send "\r\n"
 } -start
 
 server s2 {