fix branding, route cron mail, add msca shim

[awsible] / roles / management / templates / sqs-poll.cron.j2

{% if MANAGEMENT_EMAIL is defined %}
MAILTO={{ MANAGEMENT_EMAIL }}
{% endif %}
* * * * * ec2-user {{ MANAGEMENT_DATA_ROOT }}/sqs-action.py {{ MANAGEMENT_DATA_ROOT }} {{ MANAGEMENT_EVENT_QUEUE }} {{ management_notice_topic.sns_arn }}