[SP-1394][TEST]: Backport of PDI-12560 - HTTP step add date and time to file name options doesnot work properly (5.1)

There is a unit test.
[SP-1394]: Backport of PDI-12560 - HTTP step add date and time to file name options doesnot work properly (5.1)

There is a fix.
Merge pull request #691 from TatsianaKasiankova/SP-1394

SP-1394:  Backport of PDI-12560 - HTTP step add date and time to file name options doesnot work properly (5.1)