-hkps_protocol_supported = os[:family] =~ %r{Ubuntu} && \
- os[:family][:release][:full] =~ %r{^18\.04}
+hkps_protocol_supported = host_inventory['facter']['os']['family'] =~ %r{Ubuntu}i && \
+ host_inventory['facter']['os']['release']['major'] =~ %r{^18\.04}