Disable colorised grep output
Disable colorised grep output

In centos 7 grep aliased to

  grep --color=auto

which causes line matching error in product.sh

Blueprint: master-on-centos7

Breaks: nothing

Closes-Bug: #1517140

Change-Id: If7b351834535a5dbe900ec5387d48fcb81885458
stackforge/fuel-main,eayunstack/fuel-main,eayunstack/fuel-main,SergK/fuel-main,stackforge/fuel-main,huntxu/fuel-main,SergK/fuel-main,stackforge/fuel-main,SergK/fuel-main,huntxu/fuel-main,huntxu/fuel-main,eayunstack/fuel-main