Set disk cache directory

Configures the directory to use to store cached files. If you enable this policy, Microsoft Edge uses the provided directory regardless of whether the user has specified the '--disk-cache-dir' flag. To avoid data loss or other unexpected errors, don't configure this policy to a volume's root directory or to a directory used for other purposes, because Microsoft Edge manages its contents. See https://go.microsoft.com/fwlink/?linkid=2095041 for a list of variables you can use when specifying directories and paths. If you don't configure this policy, the default cache directory is used, and users can override that default with the '--disk-cache-dir' command line flag. Example value: ${user_home}/Edge_cache