Fix system test for Memorystore memcached
diff --git a/tests/system/providers/google/cloud/cloud_memorystore/example_cloud_memorystore_memcached.py b/tests/system/providers/google/cloud/cloud_memorystore/example_cloud_memorystore_memcached.py
index 4a41a1449a908..df268320cc91c 100644
--- a/tests/system/providers/google/cloud/cloud_memorystore/example_cloud_memorystore_memcached.py
+++ b/tests/system/providers/google/cloud/cloud_memorystore/example_cloud_memorystore_memcached.py
@@ -46,7 +46,12 @@
 LOCATION = "europe-north1"
 
 # [START howto_operator_memcached_instance]
-MEMCACHED_INSTANCE = {"name": "", "node_count": 1, "node_config": {"cpu_count": 1, "memory_size_mb": 1024}}
+MEMCACHED_INSTANCE = {
+    "name": "",
+    "node_count": 1,
+    "node_config": {"cpu_count": 1, "memory_size_mb": 1024},
+    "zones": [LOCATION + "-a"],
+}
 # [END howto_operator_memcached_instance]
 
 

Fixed system test for Google Memorystore memcached by adding zone to instance nodes specification
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