Reconnect to redis.

        :return: Redis client instance
        :rettype: redis.Redis

def reconnect_redis(self):
        '''Reconnect to redis.

        :return: Redis client instance
        :rettype: redis.Redis
        '''

        if self.shared_client and Storage.storage:
            return Storage.storage

        storage = Redis(
            port=self.context.config.REDIS_RESULT_STORAGE_SERVER_PORT,
            host=self.context.config.REDIS_RESULT_STORAGE_SERVER_HOST,
            db=self.context.config.REDIS_RESULT_STORAGE_SERVER_DB,
            password=self.context.config.REDIS_RESULT_STORAGE_SERVER_PASSWORD
        )

        if self.shared_client:
            Storage.storage = storage
        return storage