OpenSuSE: Installing bluez devel package

Change-Id: I66c193f2efb1b9c9da48466494181b0a7e900f7c
Reviewed-by: Heikki Halmet <heikki.halmet@digia.com>
Add libcap-dev to Ubuntu nodes

This QtWebengine dependency is missing from ubuntus

Change-Id: I5f17f347c5c247df181cda314bf6450702d0d6aa
Reviewed-by: Simo Fält <simo.falt@digia.com>
Jenkins: Install extended E-mail plugin

This plugins allows Qt nightly build to inform developers about
the current status. The default jenkins e-mail feature doesn't
allow additional info in mail body, like link to log files.

Task-number: QTQAINFRA-831
Change-Id: I66496d62d403f7546c148c8fcd2bd1599a6892f7
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>
Icecream: Disable on startup

There is a doubt that our installation doesn't work correctly,
so this will disable the icecream so that we will see if it makes
any difference in build times.

Change-Id: I12068153adf47d568ded2039c9e29d49bd836d15
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>