OOM Exception during large file upload

[slackwar]

During large file(9+Gb) upload nexus3-cli crashes with OOM exception.

[bt-thiago]

We fixed this in 7ace4b4 for downloads. It's the same fix for uploads (should be anyway).

[bt-thiago]

Looking at this again, the same fix is not enough for uploads because of this:

nexus3-cli/src/nexuscli/api/repository/upload.py

Line 25 in 9360a84

files = {'raw.asset1': open(src_file, 'rb').read()}

which loads the entire contents of the file to be uploaded in memory