add test for returndatasize after ecrec

[cdetrio]

Minimal test case for consensus issue was discovered by fuzz testing. Fixed in Parity in openethereum/parity-ethereum#6652

[winsvega]

please refill with latest develop

[cdetrio]

will there be any change with latest develop? other than the filledwith metadata

[winsvega]

hash of the test filler required

[pirapira]

@cdetrio otherwise, when testeth:develop runs this test, it reports errors about missing fillerhash. testeth:develop tries to make sure the test is up-to-date with the filler, by comparing the filler contents against a hash recorded in the filled test.

[winsvega]

#362