This was lost in the translation to ansible, but it's needed to
enable existing interfaces such as hiera includes via *ExtraConfig.
For reference this problem was introduced in:
I674a4d9d2c77d1f6fbdb0996f6c9321848e32662 and this fix only considers
returning the behaviour prior to that patch (for the baremetal puppet
apply), further discussion is required on if/how this could be applied
to the new container architecture.
Change-Id: I0384edb23eed336b95ffe6293fe7d4248447e849
Partial-Bug: #1742663
bb9fd2c61a