Fake metadata provider is not working with ruby < 2.4

[‮Artem]

Exception:

ArgumentError:
       wrong number of arguments (given 1, expected 0)

Line of code:

spree_batch_api/app/actions/spree/inventory/providers/fake_metadata_provider.rb

Line 19 in 0622a4c

 price: Random.rand(100.0).floor(2), 

Build:
https://travis-ci.org/public-market/spree_batch_api/jobs/342741197