Added Step reminding users to add the ResellerAdmin to Swift’s proxy-server.conf

Added a new Step 5 instructing users to add the ResellerAdmin to the operator_roles parameter in /etc/swift/proxy-server.conf.

back port: icehouse
Closes-Bug: 1360383

Change-Id: I0111a11af3e0464960fb56d73b6ee064ae7efc6d
Merge "Added Step reminding users to add the ResellerAdmin to Swift’s proxy-server.conf"