Add QtEnginio dev,stable and release branches to integrator cfg

Start tracking these 3 branches and remove the master branch
from being tracked.

Change-Id: I6245e86ff1b723cfd9526985488b5fcb9ad3ec44
Reviewed-by: Simo Fält <simo.falt@digia.com>
QtQA: Adding QWebChannel module to Ci

Change-Id: If3507712364c1c52b80e2ed759ab50aad0b3e46c
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>
Reviewed-by: Milian Wolff <milian.wolff@kdab.com>
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>
QtQa: Enabling configurable build publishers

Added support to configure jenkins publishing plugins usage per
job. Now supporting xUnit plugin and Build publisher plugin.

Task-number: QTQAINFRA-689
Task-number: QTQAINFRA-783
Change-Id: I65dad2eb07e8d935e203b94608bcc0b483a884fe
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>