[FLINK-37937] Rebase on main and reference cassandraContainer1 instead of cassandraContainer

Author: echauchot

flink-connector-cassandra/src/test/java/org/apache/flink/connector/cassandra/CassandraTestEnvironment.java

@@ -289,18 +289,18 @@ public Session getSession() {
     }
 
     public String getContactPoint() {
-        return cassandraContainer.getHost();
+        return cassandraContainer1.getHost();
     }
 
     public int getPort() {
-        return cassandraContainer.getMappedPort(CQL_PORT);
+        return cassandraContainer1.getMappedPort(CQL_PORT);
     }
 
     public String getUsername() {
-        return cassandraContainer.getUsername();
+        return cassandraContainer1.getUsername();
     }
 
     public String getPassword() {
-        return cassandraContainer.getPassword();
+        return cassandraContainer1.getPassword();
     }
 }