Don't manage envvars on 'absent'
Don't manage envvars on 'absent'

This is an ugly repetition of an existing pattern. The envvar modules don't
support ensure absent/present so we gate the whole thing. This may leave remnants
on the file system but it will not fail trying to manage non-existent directories.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet