fails description

[guillaumeduhamel]

for fails instruction:

{
  id: 'proto.011-PtHangz2.michelson_v1.script_rejected',
  with: Object michelson
}

for tez addition overflow

{
  id: 'proto.011-PtHangz2.tez.addition_overflow'
}

for tez multiplication overflow

{
  id: 'proto.011-PtHangz2.tez.multiplication_overflow'
}

for 2 |>> 257

{
  id: 'proto.011-PtHangz2.michelson_v1.script_overflow'
}