Tarball from windows node can't be downloaded to linux/mac client

[johnSchnake]

What steps did you take and what happened:
Set up azure cluster with a windows node
Deployed sonobuoy
It failed because e2e upstream wasn't published (this is fine)
Tried to download results with sonobuoy retrieve

Got: error retrieving results: gzip: invalid header

Confirmed file existed in node though.

Downloaded manually via:

kubectl cp

And when I untar'd the results, all the pathing was messed up due to the windows path separators. This is presumably the retrieve failed as well.

Results were like:

hosts
hosts\aks-agentpool-26087239-vmss000000
hosts\aks-agentpool-26087239-vmss000000\configz.json
hosts\aks-agentpool-26087239-vmss000000\healthz.json
hosts\aksschwin000000
hosts\aksschwin000000\configz.json
...

What did you expect to happen:

Should be able to download tarball
Should result in the same directory structure regardless of OS

** Note **
Testing done with a pre-release of sonobuoy when I built myself that included the netapi32.dll fix that is currently under review #1265