Set manual check for updates to the version defined by Auto Update

Default policy is disabled. This policy depends on AU2_EnableAutoUpdate and AU2_EnableManualUpdate, if AU2_EnableAutoUpdate or AU2_EnableManualUpdate is disabled, AU2_LimitManualUpdateVersion will not work. If this policy is enabled, client will set manual check for updates to the version defined by Auto Update. If this policy is disabled, client will set manual check for updates to the latest version. If this policy is not set, client will use the default setting.