add ssl-vault

[ramonskie]

i think most of the community now uses chef-vault to store there certificates
and it would be nice to use ssl-vault for this
https://github.com/onbeep-cookbooks/ssl-vault

its relatively easy do add this

include the ssl-vault cookbook
and set the attribute

default[:'ssl-vault'][:certificates] = ['YOURDATABAGNAME']

[ramonskie]

if anyone is interested i can make a pull-request and add some documentation of how to