Make heuristic evaluation for extra fee

[alexvanin]

Inner ring can't calculate precise fee for contract invocation with signature collection. While most of the nodes only register signature, one node will trigger method execution, that requires much more gas to spend. Amount of extra fee depends on method complexity. Some methods depends on inner ring size, e.g. container creation triggers nep-5 transfers to every single inner ring nodes. The more inner ring nodes we have, the more gas method spend.

So there should be some heuristic evaluation before each invocation for extra fee.

There are also different solution approaches for this issue. For example inner ring nodes can repeat tx that not accepted in block: tx that trigger method execution lacks gas after testinvoke evaluation. But next time testinvoke evaluation will be precise. However this approach can slower all chain operations.

[realloc]

May become obsolete by P2P signature gathering mechanism