Another fix for bnc#792985 - set links up during installation.

Earlier fix (see 2.17.183) had a bug.
Set links up when probing interfaces during installation. See
bnc#792985.

However this one is not working too and was submitted into IBS
only on QA request.
Updated changelog

Conflicts:

	VERSION
	package/yast2-network.changes
Merge pull request #70 from mchf/Code-11-SP3

set links up during installation.