remove facts playbook, and created custom xsce module
update playbook and templates to use new facts
vars: remove network info from variables
use templates instead of shell commands
common: select only one iface as LAN
common: raise error when there is just one network interface
xsce_facts: improve XO-4 identification
common: use xsce_facts instead of xsce as module name
network: improve one interface setups
Merge pull request #38 from scollazo/feature-autoconfig_network3

Feature autoconfig network3
squid: remove role, and make it part of gateway
remove squid core roles
Merge pull request #39 from scollazo/issue-disable_proxy_when_no_lan_iface

Issue disable proxy when no lan iface
Merge branch 'master' into feature-add-activity-server