test: Workaround the new OpenSSH failure rate limiting

The new OpenSSH rate limits the failed authentication attempts per source
address and drops connection when the amount is reached, which is happening
in our testsuite.

By whitelisting the IP address of the client on the socket wrapper,
this allows the tests to pass.

https://man.openbsd.org/sshd_config.5#PerSourcePenaltyExemptList

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit 7b89ff760a2c7119916eaa8fd6a62afbd15fc3ad)

Author: Jakuje

tests/torture.c

@@ -755,6 +755,9 @@ static void torture_setup_create_sshd_config(void **state, bool pam)
              "HostKeyAlgorithms " OPENSSH_KEYS "\n"
 #if OPENSSH_VERSION_MAJOR == 8 && OPENSSH_VERSION_MINOR >= 2
              "CASignatureAlgorithms " OPENSSH_KEYS "\n"
+#endif
+#if (OPENSSH_VERSION_MAJOR == 9 && OPENSSH_VERSION_MINOR >= 8) || OPENSSH_VERSION_MAJOR > 9
+             "PerSourcePenaltyExemptList 127.0.0.21\n"
 #endif
              "Ciphers " OPENSSH_CIPHERS "\n"
              "KexAlgorithms " OPENSSH_KEX "\n"
@@ -786,6 +789,9 @@ static void torture_setup_create_sshd_config(void **state, bool pam)
              "%s\n" /* Here comes UsePam */
              "%s" /* The space for test-specific options */
              "\n"
+#if (OPENSSH_VERSION_MAJOR == 9 && OPENSSH_VERSION_MINOR >= 8) || OPENSSH_VERSION_MAJOR > 9
+             "PerSourcePenaltyExemptList 127.0.0.21\n"
+#endif
              "Ciphers "
                 "aes256-gcm@openssh.com,aes256-ctr,aes256-cbc,"
                 "aes128-gcm@openssh.com,aes128-ctr,aes128-cbc"