Failing tests for settlement

[Ino Murko]

Tests like

braintree-elixir/test/integration/transaction_test.exs

Line 33 in 5dd0616

 test "submit_for_settlement/2 can be used if transaction is authorized but not settling" do 

and

braintree-elixir/test/integration/transaction_test.exs

Line 10 in 5dd0616

 test "sale/1 successful with a payment nonce" do 

are failing because the transaction immediately gets to status settled

[Parker Selbert]

Do you have steps to replicate the failure? I don't get any failures when I run the integration tests locally or on CI. The most trouble I've seen is from running too many tests simultaneously (i.e., in CI) where it gets rate limited.

If you have steps to replicate please post them or open a PR to fix things up.