connman: do not add default gw as timeserver
service.openelec.settings: update to service.openelec.settings-0.2.11
create_livestick: check for 'mkfs.vfat'

closes #2567
vdr-addon: update vdr-plugin-vnsiserver to 4ff75cd (vnsiserver4) for gotham builds
pvr: update vdr-plugin-vnsierver & pvr addons to 5b20fa5