ALF-11546 Tracking queries on alf_transaction table do not have an upper bound

- Part 1: fix indexes to support query

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@32635 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

config/alfresco/dbscripts/create/org.hibernate.dialect.MySQLInnoDBDialect/AlfrescoCreate-RepoTables.sql

@@ -215,6 +215,7 @@ CREATE TABLE alf_node
     PRIMARY KEY (id),
     UNIQUE KEY store_id (store_id, uuid),
     KEY idx_alf_node_del (node_deleted),
+    KEY idx_alf_node_txn_del (transaction_id, node_deleted),
     KEY fk_alf_node_acl (acl_id),
     KEY fk_alf_node_txn (transaction_id),
     KEY fk_alf_node_store (store_id),