(Fix) e2e tests update

[vbaranov]

Increasing the speed of e2e tests.

@dennis00010011b please, clarify details of the changes.

[coveralls]

Pull Request Test Coverage Report for Build 1607

• 0 of 0 (NaN%) changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 10.013%

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Totals
Change from base Build 1605:	0.0%
Covered Lines:	268
Relevant Lines:	1964

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💛 - Coveralls

[dennis00010011b]

Changes:

1. Decreased execution time of metod doTransaction()
2. Added checking of failed transactions in metod doTransaction(). Script stops checking for transaction if transaction doesn't appear in 30 sec.
3. Added email sending of file result.log