chore: persist a chocolatey cache Appveyor CI builds (#809)
chore: persist a chocolatey cache Appveyor CI builds (#809)

Setting a Chocolatey cache and Making sure it gets persisted means that
future builds don't have to download every Chocolatey package from the
internet every time.

Signed-off-by: Juan Cruz Viotti <4148f5869aa1bcd7efd85b513a5874967e585032@openmailbox.org>
resin-io/herostratus,resin-io/etcher,resin-io/herostratus,resin-io/etcher,resin-io/etcher,resin-io/etcher,resin-io/resin-etcher,resin-io/etcher,resin-io/resin-etcher