fix: Cassandra test environment setup for health check tests

Author: aimansharief

test/manager/HealthCheckManagerTest.java

@@ -3,14 +3,15 @@
 import commons.dto.Response;
 import managers.HealthCheckManager;
 import managers.IHealthCheckManager;
+import common.CassandraTestSetup;
 import org.junit.After;
 
 import org.junit.Before;
 import org.junit.Test;
 
 import static org.junit.Assert.*;
 
-public class HealthCheckManagerTest {
+public class HealthCheckManagerTest extends CassandraTestSetup {
 
     HealthCheckManager healthCheckManager;
     boolean goodHealth;