This configurability is unlocked through the `testground`
build tag, which Project Oni will uses.
Changes in the usage places of these relaxed constants
were required due to the fact that Golang constants are
untyped, but vars aren't.
Read https://blog.golang.org/constants for more info.
* WIP: working on sector pledge requirements after specs-actors 1.0.0
* update storage-fsm with pledge collateral logic
* Set bigger balances for miners
* Return only additional required pledge
* split collateral methods into two methods
Co-authored-by: Łukasz Magiera <magik6k@gmail.com>