Tool to update dynECT hosted domains from collins assets

collins2dynect will:

1. delete all A records from the given domain
2. Request all assets from collins
3. Add a DNS record for each address a asset has
4. Add a DNS record [alias].[domain] for each alias in DNS_ALIASES
5. Publish the zone

1. collins-shell

To add a record 'foo.[domain]' pointing to asset 'bar's address from pool 'dmz', set the DNS_ALIASES attribute like this:

collins-shell asset set_attribute DNS_ALIASES "foo@dmz" --tag="bar"

DNS_ALIASES is a whitespace separated list.

The format (hardcoded for now):

[PRIMARY_ROLE][%03d ID].[SECONDARY_ROLE].[POOL].[domain]