'Add course details to dict of course details to be updated when configure_course or install is called.
Arguments:
Dictionary containing key value pairs for course updates,
e.g. {\'start_date\': datetime.now() }'

def add_course_details(self, course_details):

    if ('start_date' in course_details):
        course_details['start_date'] = course_details['start_date'].isoformat()
    if ('end_date' in course_details):
        course_details['end_date'] = course_details['end_date'].isoformat()
    self._course_details.update(course_details)
