'Checks whether or not verified track cohort is enabled for the given course.
Args:
course_key (CourseKey): a course key representing the course we want to check
Returns:
True if the course has verified track cohorts is enabled
False if not'

@classmethod
@ns_request_cached(CACHE_NAMESPACE)
def is_verified_track_cohort_enabled(cls, course_key):

    try:
        return cls.objects.get(course_key=course_key).enabled
    except cls.DoesNotExist:
        return False
