Failure when deploying kartotherian to the new beta cluster instance, this is similar to T184175.
mbsantos@deployment-deploy01:/srv/deployment/kartotherian/deploy$ scap deploy --environment beta "Drop support to package repo" 21:53:16 Started deploy [kartotherian/deploy@dfbf27f] (beta) 21:53:16 Deploying Rev: HEAD = dfbf27fd6f3a6156f9d9b24a046878625b602e3f 21:53:16 Started deploy [kartotherian/deploy@dfbf27f] (beta): Drop support to package repo 21:53:16 == DEFAULT == :* deployment-maps06.deployment-prep.eqiad.wmflabs 21:53:16 ['/usr/bin/scap', 'deploy-local', '-v', '--repo', 'kartotherian/deploy', '-g', 'default', 'fetch', '--refresh-config'] on deployment-maps06.deployment-prep.eqiad.wmflabs returned [255]: Host key verification failed. 21:53:16 connection to deployment-maps06.deployment-prep.eqiad.wmflabs failed and future stages will not be attempted for this target