Fix ceph_rgw_node04_public_address to correct

Change-Id: I2606c63e0b616b2de5395cc5143c52c0458780f0
diff --git a/tcp_tests/tests/system/test_ceph_operations.py b/tcp_tests/tests/system/test_ceph_operations.py
index ef23b67..96ad61a 100644
--- a/tcp_tests/tests/system/test_ceph_operations.py
+++ b/tcp_tests/tests/system/test_ceph_operations.py
@@ -517,7 +517,7 @@
     # # ------------------RGW specific settings -----------
     if node == 'rgw':
         data['RGWSETTINGS'] = """
-                ceph_public_address: ${_param:ceph_rgw_node04_public_address}
+                ceph_public_address: ${_param:ceph_rgw_node04_ceph_public_address}
                 keepalived_vip_priority: 104
                 """  # noqa: E501