Make ssl_setup.sh compatible with CentOS 7
Make ssl_setup.sh compatible with CentOS 7

Use yum instead of dnf.

javierpena/puppet-delorean,javierpena/puppet-delorean,rdo-infra/puppet-dlrn,rdo-infra/puppet-dlrn,rdo-infra/puppet-dlrn,javierpena/puppet-delorean