Lower artificial coin-selection request amount from 1000 ada to 10 ada

If the wallet contains a lot of dust we may be unable to produce a
selection.

https://preprod.cexplorer.io/address/addr_test1qp9juu544jrkel0hp6pvrjud70h9ev3ajw2fuvezyv8ug3eg3292mxuf3kq7nysjumlxjrlsfn9tp85r0l54l29x3qcsytvx58/utxo#data

test/e2e/spec/e2e_spec.rb

@@ -471,7 +471,7 @@ def script_hash
       # Perform coin selection to select input to be used in minting contract
       address = SHELLEY.addresses.list(@wid)[0]['id']
       payload_cs = [{ address: address,
-                      amount: { quantity: 1_000_000_000, unit: 'lovelace' } }]
+                      amount: { quantity: 10_000_000, unit: 'lovelace' } }]
       coin_selection = SHELLEY.coin_selections.random(@wid, payload_cs)
       print coin_selection if coin_selection['inputs'].nil?
       input = coin_selection['inputs'].select { |i| i['assets'] == [] }.first