Add back openssl client auth test

Change-Id: Iea3b70381c3851102c542d1c55c0303bc3a14a92
Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 33a9552..21d17f9 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -11241,10 +11241,6 @@
             -s "tls13 server state: MBEDTLS_SSL_CLIENT_FINISHED" \
             -s "tls13 server state: MBEDTLS_SSL_HANDSHAKE_WRAPUP"
 
-# Skip this test before openssl exit code issue fixed
-# On fail, openssl return different exit code on OpenCI and internal CI for
-# this test.
-skip_next_test
 requires_config_enabled MBEDTLS_SSL_PROTO_TLS1_3
 requires_config_enabled MBEDTLS_DEBUG_C
 requires_config_enabled MBEDTLS_SSL_SRV_C
@@ -11252,7 +11248,7 @@
 run_test    "TLS 1.3: Server side check - openssl with client authentication" \
             "$P_SRV debug_level=4 auth_mode=required crt_file=data_files/server5.crt key_file=data_files/server5.key force_version=tls13 tickets=0" \
             "$O_NEXT_CLI -msg -debug -cert data_files/server5.crt -key data_files/server5.key -tls1_3 -no_middlebox" \
-            1 \
+            0 \
             -s "tls13 server state: MBEDTLS_SSL_CLIENT_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_SERVER_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS" \