Update EOF validation test for top-level containers

[chfast]

• Update tests because of the validation rule change: top-level containers must not have truncated data.
• Fix some expected error messages.
• Change ">=Prague" to "Prague" because not supported in retesteth.

[winsvega]

Test Case "efValidation": (3 of 9)
Error: Test /home/travis/build/ethereum/tests/EOFTests/efValidation/EOF1_undefined_opcodes_.json is outdated. Filler hash is different! ('1c79' != '1d40')  (EOFTests/efValidation/EOF1_undefined_opcodes_Copier, step: CheckFiller)
Error: Tests are not generated (forgot --filltests?): 
 /home/travis/build/ethereum/tests/src/EOFTestsFiller/efValidation/EOF1_undefined_opcodes_Copier.json => /home/travis/build/ethereum/tests/EOFTests/efValidation/EOF1_undefined_opcodes_.json