Control updater's communication with the Experimentation and Configuration Service

In Microsoft Edge Update, the Experimentation and Configuration Service is used to deploy experimentation payload. Experimentation payload consists of a list of early in development features that Microsoft is enabling for testing and feedback. If you enable (1) this policy, experimentation payload is downloaded from the Experimentation and Configuration Service. If you disable (0) this policy, communication with the Experimentation and Configuration Service is stopped completely. If you don't configure this policy, on a managed device the behavior is same as policy 'disabled'. If you don't configure this policy, on an unmanaged device the behavior is same as policy 'enabled'.