[server][testItemGroup] Add an assertion about a used count.
[server][testDBClientUser] Fix a bug in which the expected row ID is not set.
[server][DBClientUser] Replace ADD_NEW_ITEM(String,) with addNewItem().
[server][DBClientUser] Replace ADD_NEW_ITEM(Uint64,) with addNewItem().
[server][DBClientUser] Replace ADD_NEW_ITEM(int,) with addNewItem().
[server][ArmZabbixAPI] Replace ADD_NEW_ITEM() with addNewItem().
[server][ItemGroup] Add addNewItem() with ItemId.
[server][ArmZabbixAPI] Fix a degradation contaminated at 26fc97bd4.
[server][ItemGroup] Clean up.
[server][ItemGroup] Clean up.
[server][DBClient] Replace ADD_NEW_ITEM with addNewItem().
[server][DBClientZabbix] Remove unused data and methods.
[server][DBClientAction] Fix a wrong type.
[server][DBClientAction] Replace ADD_NEW_ITEM() with addNewItem().
[server][DBClientConfig] Replace ADD_NEW_ITEM() with addNewItem().
[server][ItemGroup] Add another version of addNewItem() with time_t.
[server][ItemGroup] Add a default parameter as with its siblings.
[server][DBClientHatohol] Replace ADD_NEW_ITEM with addNewItem().
[server][DBAgentTest] Replace ADD_NEW_ITEM with addNewItem().
[server][testDBClientZabbix] Replace ADD_NEW_ITEM with addNewItem().