ssl-opt.sh: TLS 1.3: Run tests with middlebox compatibility enabled

Run tests with middlebox compatibility enabled but tests
dedicated to middlebox compatibility disabled.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/scripts/generate_tls13_compat_tests.py b/tests/scripts/generate_tls13_compat_tests.py
index 07013ae..0bf8555 100755
--- a/tests/scripts/generate_tls13_compat_tests.py
+++ b/tests/scripts/generate_tls13_compat_tests.py
@@ -138,7 +138,7 @@
                 "-sigalgs {signature_algorithms}".format(
                     signature_algorithms=signature_algorithms),
                 "-groups {named_groups}".format(named_groups=named_groups)]
-        ret += ['-msg -tls1_3 -no_middlebox -num_tickets 0 -no_resume_ephemeral -no_cache']
+        ret += ['-msg -tls1_3 -num_tickets 0 -no_resume_ephemeral -no_cache']
         return ' '.join(ret)
 
     def pre_checks(self):
@@ -221,7 +221,7 @@
         priority_string_list = ['NONE'] + sorted(priority_string_list) + ['VERS-TLS1.3']
 
         priority_string = ':+'.join(priority_string_list)
-        priority_string += ':%NO_TICKETS:%DISABLE_TLS13_COMPAT_MODE'
+        priority_string += ':%NO_TICKETS'
         ret += ['--priority={priority_string}'.format(
             priority_string=priority_string)]
         ret = ' '.join(ret)
@@ -272,6 +272,7 @@
         ret = ['requires_config_enabled MBEDTLS_DEBUG_C',
                'requires_config_enabled MBEDTLS_SSL_CLI_C',
                'requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL',
+               'requires_config_enabled MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE',
                'requires_config_disabled MBEDTLS_USE_PSA_CRYPTO']
         if 'rsa_pss_rsae_sha256' in self._sig_algs:
             ret.append(