Resolve pylint message R0205

R0205: Class '%s' inherits from object, can be safely removed from
bases in python3

Change-Id: I112c3a26b0a739d9ccb274c5f8fb62f7e3d53bfb
diff --git a/tests/container-images/gerrit-init/test_container_integration_gerrit_init_h2.py b/tests/container-images/gerrit-init/test_container_integration_gerrit_init_h2.py
index e997296..1cbda4a 100644
--- a/tests/container-images/gerrit-init/test_container_integration_gerrit_init_h2.py
+++ b/tests/container-images/gerrit-init/test_container_integration_gerrit_init_h2.py
@@ -76,7 +76,7 @@
   return container_run
 
 @pytest.mark.incremental
-class TestGerritInitEmptySite(object):
+class TestGerritInitEmptySite:
   def test_gerrit_init_gerrit_is_initialized(self, container_run_default):
     def wait_for_init_success_message():
       log = container_run_default.logs().decode("utf-8")
@@ -98,7 +98,7 @@
     assert container_run_default.attrs["State"]["ExitCode"] == 0
 
 @pytest.mark.incremental
-class TestGerritInitPluginInstallation(object):
+class TestGerritInitPluginInstallation:
   def test_gerrit_init_plugins_are_installed(self, container_run_endless):
     exit_code, _ = container_run_endless.exec_run(
       "/var/tools/gerrit_init.py -s /var/gerrit -p replication -p reviewnotes")
diff --git a/tests/container-images/gerrit-master/test_container_integration_gerrit_master.py b/tests/container-images/gerrit-master/test_container_integration_gerrit_master.py
index 7c0ea8c..0519394 100644
--- a/tests/container-images/gerrit-master/test_container_integration_gerrit_master.py
+++ b/tests/container-images/gerrit-master/test_container_integration_gerrit_master.py
@@ -77,7 +77,7 @@
 
 @pytest.mark.slow
 @pytest.mark.incremental
-class TestGerritMasterStartScript(object):
+class TestGerritMasterStartScript:
   def test_gerrit_master_gerrit_starts_up(self, container_run):
     def wait_for_gerrit_start():
       log = container_run.logs().decode("utf-8")
diff --git a/tests/container-images/gerrit-slave/test_container_integration_gerrit_slave.py b/tests/container-images/gerrit-slave/test_container_integration_gerrit_slave.py
index 743293e..885bc6e 100644
--- a/tests/container-images/gerrit-slave/test_container_integration_gerrit_slave.py
+++ b/tests/container-images/gerrit-slave/test_container_integration_gerrit_slave.py
@@ -89,7 +89,7 @@
 
 @pytest.mark.slow
 @pytest.mark.incremental
-class TestGerritSlaveH2(object):
+class TestGerritSlaveH2:
 
   @pytest.fixture(params=CONFIG_FILES)
   def config_file_to_test(self, request):
diff --git a/tests/container-images/mysql-replication-init/test_container_integration_mysql_replication_init.py b/tests/container-images/mysql-replication-init/test_container_integration_mysql_replication_init.py
index c2c0f08..093b875 100644
--- a/tests/container-images/mysql-replication-init/test_container_integration_mysql_replication_init.py
+++ b/tests/container-images/mysql-replication-init/test_container_integration_mysql_replication_init.py
@@ -92,7 +92,7 @@
 
 @pytest.mark.slow
 @pytest.mark.incremental
-class TestMysqlInitScript(object):
+class TestMysqlInitScript:
   def test_mysql_replication_init_waiting_for_dump(self, containers):
     (_, init_container) = containers
     timeout = time.time() + 20