'alert when flow logs are not enabled for VPC'

def check_flow_logs_enabled(self, vpc_item):

    flow_log_items = self.get_watcher_support_items(FlowLog.index, vpc_item.account)
    vpc_id = vpc_item.config.get('id')
    tag = 'Flow    Logs    not    enabled    for    VPC'
    severity = 5
    flow_logs_enabled = False
    for flow_log in flow_log_items:
        if (vpc_id == flow_log.config.get('resource_id')):
            flow_logs_enabled = True
            break
    if (not flow_logs_enabled):
        self.add_issue(severity, tag, vpc_item)
