New REST port for embedded flink

Author: mzitnik

flink-connector-clickhouse-base/src/test/java/org/apache/flink/connector/test/embedded/flink/EmbeddedFlinkClusterForTests.java

@@ -9,7 +9,7 @@
 public class EmbeddedFlinkClusterForTests {
 
     static MiniClusterWithClientResource flinkCluster = null;
-    static int REST_PORT = getFromEnvOrDefault("REST_PORT", 8081);
+    static int REST_PORT = getFromEnvOrDefault("REST_PORT", 9091);
     static int NUM_TASK_SLOTS = getFromEnvOrDefault("NUM_TASK_SLOTS", 2);
     static int NUM_TASK_SLOTS_PER_TASK = getFromEnvOrDefault("NUM_TASK_SLOTS_PER_TASK" , 2);
     static int NUM_TASK_MANAGERS = getFromEnvOrDefault("NUM_TASK_MANAGERS",3);