Update test.yaml

Fix tag name

Author: seviet

cloud_sql/mysql_instance_switchover/switchover_begin/test.yaml

@@ -15,6 +15,6 @@
 apiVersion: blueprints.cloud.google.com/v1alpha1
 kind: BlueprintTest
 metadata:
-  name: mysql_instance_switchover_begin
+  name: mysql_instance_switchover_switchover_begin
 spec:
   skip: true