Added wrappers ssl::certs and ssl::incommons for hiera

You can now specify in heira:

ssl::certs::cert_hash:
  www.example.com:
    alt_names:
      - www2.example.com
    country: 'US'
    org: 'Example.com, LLC'
    org_unit: 'Web Team'
    state: 'CA'

ssl::incommons::incommon_hash:
  www.example.com:
    id: '12345'