Upload encrypted files - make sure it works as a non-owner

[elv-arun]

Epic: qluvio/info#362

Small Features: Item #3. Upload encrypted files - make sure it works as a non-owner

FLOW

• Create a new object

• Upload an encrypted file

  • As a side effect - this creates the owner CAPS

• Set permissions to EDITABLE

• Set groups permissions to (say) Content Admins

• As another user in Content Admins

  • upload an encrypted file

[elv-serban]

Verified - both users can upload encrypted files and download the files uploaded by the other.