* ns1: enable autoDNSSEC capability
NS1's API has support for enabling or disabling DNSSEC on zones under
DNSSEC-enabled accounts.
This commit enables support for detecting a zone's DNSSEC state and,
given the autoDNSSEC setting, pushing the right domain corrections
to our corrections stack.
Fixes #1444
* ns1: better comments
* ns1: Handle a forgotten error
* ns1: style: spacing between functions
Co-authored-by: Tom Limoncelli <tlimoncelli@stackoverflow.com>