Allow customising parameters related to disk cleanup#623

Draft

lox wants to merge 13 commits intomainfrom allow-min-disk-before-clean-to-be-customized

+206-74

Commits on Oct 2, 2019

Allow minimum disk before cleanup to be customized

lox
authored and
Arturo Pie
committed
Fix mis-matched quotes

lox
authored and
Arturo Pie
committed

Commits on Oct 3, 2019

Fix and add tests for the dehumanize function
Arturo Pie
committed

Commits on Oct 6, 2019

removes default disk min duplication. bk-check-disk-space will have the default
Arturo Pie
committed