Register delegate with 2nd passphrase e2e test sometimes fail

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Expected behaviour

E2e tests shoul be stable

Actual behaviour

This test sometimes fails:

I suspect that the problem is that the transaction that registers the second passphrase for the account used in the test (sent in e2e-test-setup.sh) is not processed yet. It depends on the mutual timing of:

• launching e2e tests
• block being forged

The easy fix would be to increase the sleep in e2e-test-setup.sh.
But the setup would be faster to use the snapshot used for e2e tests in Explorer.
https://github.com/LiskHQ/lisk-explorer/blob/4d3735f5cf964ae91005b064b883c8dd768bcab8/e2e-test-setup.sh#L11

The snapshot should have all transactions used in Nano e2e tests.

Steps to reproduce

Run e2e tests repeatedly until it happens