Source Amazon SP: Fill all implemented streams with data

[htrueman]

Tell us about the problem you're trying to solve

There are 2 streams which needs to be filled with data, so the tests would cover all the streams: Orders (implemented) and VendorDirectFulfillmentShipping (in progress, see #5248).

Describe the solution you’d like

We have 2 sets of creds for now in LastPass: Amazon SP API (owned by cart.com) and AWS amazon sp api selling-partner-api config.

• Amazon SP API (owned by cart.com) has no enough rights for the API auth, so I couldn't check out if these streams are filled there.
• AWS amazon sp api selling-partner-api config has enough rights, but we need the fill the streams with real data (real items, which are in sale in Amazon).

So we need to get these stream data either way to add all the streams to the tests.

Additional context

Related tasks: #4863, #5311, #5248

Are you willing to submit a PR?

We need to either fill our test account with real data or get the proper permissions to the partner account.