[FS#675] Packages and Packages.gz have different content, cause opkg update fail when configured with src/gz

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - jwfang (jwfang) 

Attached to Project - LEDE Project
Summary - Packages and Packages.gz have different content, cause opkg update fail when configured with src/gz
Task Type - Bug Report
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - High
Priority - Very Low
Reported Version - All
Due in Version - Undecided
Due Date - Undecided
Details - the Packages and Packages.gz (when unzipped) files have different content,
and the Packages.sig seems to be base on Packages.

src/gz from distfeeds.conf prefer Packages.gz,
change src/gz to src fixed the issue.    

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=675