TestDeploy magical constant for initial deposit

[Eknir]

Currently, the function testDeploy uses a magical constant for the initial deposit:

	opts.Value = big.NewInt(9000 * int64(RetrieveRequestPrice))

We need to make this value parametrizable for testDeploy in order to prevent cheques from being bounced and make other tests not dependable on changing this constant.

[mortelli]

should solve one of the pending issues in #1925