Process GOST ClientKeyExchange message in SSL_trace

Use ssl_print_hex to print message in case of GOST key exchange algorithm.

CLA: trivial
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
Reviewed-by: NDmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/9995)

ssl/t1_trce.c

@@ -1110,6 +1110,10 @@ static int ssl_print_client_keyex(BIO *bio, int indent, const SSL *ssl,
         if (!ssl_print_hexbuf(bio, indent + 2, "ecdh_Yc", 1, &msg, &msglen))
             return 0;
         break;
+    case SSL_kGOST:
+        ssl_print_hex(bio, indent + 2, "GostKeyTransportBlob", msg, msglen);
+        msglen = 0;
+        break;
 
     }