packages: switch to stlib ensure_packages() to play nice with other modules which install ca-certificates
packages: switch to stlib ensure_packages() to play nice with other modules which install ca-certificates

camptocamp/puppet-openssl,MiamiOH/puppet-openssl,camptocamp/puppet-openssl,MiamiOH/puppet-openssl,fuel-infra/puppet-openssl,fuel-infra/puppet-openssl