wondershaper: include wondershaper into gateway and install conditionally

Only install wondershaper in 2 interfaces scenario. The ajenti wondershaper
plugin is installed from ajenti playbook and only for 2 interfaces.
Merge pull request #43 from migonzalvar/move-wshaper-to-gateway-2

wondershaper: include wondershaper into gateway and install conditionally (2)
fix missing quote
Merge branch 'master' of https://github.com/XSCE/xsce
Merge pull request #45 from jvonau/master

dhcpd fails to start
xsce_facts: specific code for XO4 removed

Fixes #50
Merge pull request #52 from scollazo/bug-xo4_long_names2

xsce_facts: specific code for XO4 removed