Add the network proposal module
Add the network proposal module

Which allows to switch the network backend (wicked or NetworkManager).
Related to fate#326480.

lnussel/skelcd-control-openSUSE,dirkmueller/skelcd-control-openSUSE,lnussel/skelcd-control-openSUSE,yast/skelcd-control-openSUSE,dirkmueller/skelcd-control-openSUSE,yast/skelcd-control-openSUSE