Template cache policy for failed browser automation

[fgregg]

it would be good to either add as a default cache policy, or provide as documentation a cache policy that will fail on any failed automations

class ZyteAPIPolicy(DummyPolicy):

    def should_cache_response(self, response, request):
        if not super().should_cache_response(response, request):
            return False

        if any('error' in action for action in response.raw_api_response['actions']):
            return False

        return True

[Gallaecio]

I don’t think it should be default, but certainly worth documenting. If it gets popular enough, it maybe be even worth allowing to enable it though a setting.