ssl-opt: add state check

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index bcbc0a0..202ad68 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -10484,6 +10484,7 @@
             -s "tls13 server state: MBEDTLS_SSL_CLIENT_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_SERVER_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS" \
+            -s "tls13 server state: MBEDTLS_SSL_SERVER_CERTIFICATE" \
             -s "SSL - The requested feature is not available" \
             -s "=> parse client hello" \
             -s "<= parse client hello"
@@ -10500,6 +10501,7 @@
             -s "tls13 server state: MBEDTLS_SSL_CLIENT_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_SERVER_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS" \
+            -s "tls13 server state: MBEDTLS_SSL_SERVER_CERTIFICATE" \
             -s "SSL - The requested feature is not available" \
             -s "=> parse client hello" \
             -s "<= parse client hello"
@@ -10515,6 +10517,7 @@
             -s "tls13 server state: MBEDTLS_SSL_CLIENT_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_SERVER_HELLO" \
             -s "tls13 server state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS" \
+            -s "tls13 server state: MBEDTLS_SSL_SERVER_CERTIFICATE" \
             -c "client state: MBEDTLS_SSL_ENCRYPTED_EXTENSIONS" \
             -s "SSL - The requested feature is not available" \
             -s "=> parse client hello" \