Update plugin later

The default dialog displayed to the user does not include a button for “Later”. Adding this policy modifies the dialog and adds an additional Later button. Option 1 displays a "Later" button in the dialog when an action (install, update or downgrade) is required. Clicking Later closes the dialog. The next time the user connects, the same dialog will be presented if the VDI plugin management software detects an action is still required. Option 2 also displays a "Later" button but clicking Later for option 2 will wait until the user disconnects from their virtual desktop(s) and then perform the required action. (0) Default (plugin auto-update later option is disabled) (1) Enables Plugin AutoUpdate Later Option (5.11.6 VDI Zoom Meeting client or higher) (2) Selecting "Later" waits until the desktop is disconnected (5.13.0 VDI Zoom Meeting client or higher)