gnosis / dex-services / 5118 / 3

31%

master: 31%

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travis-pro

Add network id parameter to price estimator (#1411)

The same way the driver has it. Used for the current gas price.

Made it default to 1 since that is the most common usage.

### Test Plan
Ran with network  1 and 4 to check that we get different prices.

12985 of 53481 branches covered (24.28%)

Branch coverage included in aggregate %.

3437 of 5425 relevant lines covered (63.35%)

43634.9 hits per line