Comment 2 for bug 1494779

If we want to fix this bug in 7.0 we need to use some workaround, because it's impossible to upgrade Ruby version after HCF. I tried to play with different options in Ruby 2.1.1 (both Psych and Syck modules) to configure Astute to always quote strings explicitly, but with no luck. However I've found another workaround - configure Hiera to use Syck module, which seems parses implicit strings as expected, here is a patch https://review.fuel-infra.org/#/c/11489/