Fix puppet sshd storedconfig warnings

deploying with verbosity 2:

- [pixelated.queridao.local] warning: You cannot collect without storeconfigs being set on line 33 in file /srv/leap/puppet/modules/sshd/manifests/base.pp
- [pixelated.queridao.local] warning: You cannot collect without storeconfigs being set on line 42 in file /srv/leap/puppet/modules/sshd/manifests/base.pp

(from redmine: created on 2015-03-17, blocks #7591 (closed))