In our environment, we use Sassafras K2 to control our licenses and limit machines from running apps over our liscense limit. I recently had to deploy K2 to a bunch of macs. You can use Apple Remote Desktop to deploy the mpkg file but it will prompt for a keyserver address. Follow the following steps to customize the mpkg file so your keyserver address is filled in.
Right click and show contents of the K2 mpkg file
Inside the Contents folder, right click and show the contents of the KeyAccess.pkg file
Navigate inside the Contents and then Resources folder. Edit the k2clientconfig.plist file with your editor of choice
Change the KSAddress field to your keyserver address and change AddressPromptUser from 1 to 0
Save your changes and your mpkg should now be customized for your environment. Use ARD to deploy the package and you just saved yourself some serious time.