Enable MRG channel by default

QPID packages are in separate channel which needs to be enabled.

Change-Id: I06f32c298b92a2c4cb4f787ffe46e6b3e8168d86
Merge "Enable MRG channel by default"
Reload sysctl

This patch add sysctl.conf reload command so that bridge-nf-call-* settings gets
loaded and security groups are functional without rebooting.

Change-Id: I6ad08c682cf11f760e8fa1cd7bf4a02dbf0bf0a0
Fixes: rhbz#1104619