Remove deprecated syntax

This uses the new style. We run this against a new enough MySQL version
that this also works.

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

Author: dbussink

java/example/src/main/java/io/vitess/example/MysqlJDBCExample.java

@@ -109,7 +109,7 @@ private static void readData(Connection conn) throws SQLException {
   }
 
   private static void validateReplica(Connection conn) throws SQLException {
-    String sql = "show slave status";
+    String sql = "show replica status";
     try (Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery(sql)) {
       if (!rs.next()) {
         throw new RuntimeException("connected to wrong tablet");