Synthetics - add ability to set device/group properties to reference in the .side file

With synthetic transactions, currently the only way to pass a value into the .side file is within the Authentication step during the initial creation of the synthetic check. The values can be referenced with the credential.username/password/token variables in the .side file.

This is pretty limiting, especially since it can only be defined during the initial check creation. If the password changes for my websites test user, I need to delete/recreate the check to redefine the authentication. This causes a loss of historical data.

It would be a huge improvement if we could set a property on the synthetic check in LogicMonitor and then reference that property within the .side file. That way if I want to change the username or password for a check which involves a login, I don’t need to delete/recreate the check.