Fix the Deploy E2E test scenario to actually transact with deployed contract

[talkol]

In test("Deployment") scenario inside NodeJs E2E test:

https://github.com/orbs-network/orbs-client-sdk-javascript/blob/master/e2e/nodejs/e2e.test.js#L126

The scenario deploys a contract named Inc and then performs transactions on BenchmarkToken.. It should be changed to transact with the newly deployed contract.