Control use of insecure content exceptions

Allows you to set whether users can add exceptions to allow mixed content for specific sites.

This policy can be overridden for specific URL patterns using the 'InsecureContentAllowedForUrls' (Allow insecure content on specified sites) and 'InsecureContentBlockedForUrls' (Block insecure content on specified sites) policies.

If this policy isn't set, users are allowed to add exceptions to allow blockable mixed content and disable autoupgrades for optionally blockable mixed content.

Policy options mapping:

* BlockInsecureContent (2) = Don't allow any site to load mixed content

* AllowExceptionsInsecureContent (3) = Allow users to add exceptions to allow mixed content

Use the preceding information when configuring this policy.