Rotate davidsingleton's SSH key
Rotate davidsingleton's SSH key

Due to CVE-0216-0778:

http://undeadly.org/cgi?action=article&sid=20160114142733.
alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet