HUE-8152 [backend] fix easy_install based build process

Review Request #12739 - Created March 29, 2018 and updated

Prakash Ranade
enricoberti, jennykim, jgauthier, johan, ranade, romain, subrata, weixia, yingc
commit c5b3385d769a251a35addc4df8c97f305026d904
Author: Prakash Ranade <>
Date:   Thu Mar 29 17:18:09 2018 -0700

    Fixing C6 build issue, wants to enforce TLS 1.2 based requests. Hue uses for python modules installation. This change contains two fixes.
    1. change the order in -H PATTERNS, priority order in this way:,,
    2. use --index-url for based package search.

:100644 100644 4898af9677... 47979207d1... M	desktop/