Update network.lua
Update network.lua

Fix display of WAN status when WAN is provided by using WWAN device or similar with other similar similar methods.
Explanation:
Before this, protocol was fetched from /etc/config/network for interface which often is wan_4 - but protocol is configured in file as wan, and therefore protocol is always none, since configuration is made for wan and then setup as wan_4 and possibly wan_6 if ipv6 is being used. This commit uses ubus to get used active protocol. For example, in case of qmi, it displays protocol as dhcp since even if I configured wan to use qmi, dhcp was used as a protocol for getting IP address.
openwrt/luci,wongsyrone/luci-1,ollie27/openwrt_luci,lbthomsen/openwrt-luci,cshore/luci,nmav/luci,bittorf/luci,bright-things/ionic-luci,kuoruan/luci,ollie27/openwrt_luci,artynet/luci,shangjiyu/luci-with-extra,jlopenwrtluci/luci,daofeng2015/luci,LuttyYang/luci,mumuqz/luci,jlopenwrtluci/luci,teslamint/luci,hnyman/luci,cshore/luci,remakeelectric/luci,LuttyYang/luci,bittorf/luci,rogerpueyo/luci,nmav/luci,cshore-firmware/openwrt-luci,jlopenwrtluci/luci,openwrt/luci,Wedmer/luci,Noltari/luci,lbthomsen/openwrt-luci,cshore/luci,aa65535/luci,tobiaswaldvogel/luci,kuoruan/luci,openwrt/luci,bright-things/ionic-luci,remakeelectric/luci,wongsyrone/luci-1,tobiaswaldvogel/luci,teslamint/luci,tobiaswaldvogel/luci,kuoruan/lede-luci,chris5560/openwrt-luci,remakeelectric/luci,taiha/luci,oneru/luci,Noltari/luci,Wedmer/luci,lbthomsen/openwrt-luci,shangjiyu/luci-with-extra,ollie27/openwrt_luci,mumuqz/luci,cshore/luci,Wedmer/luci,jlopenwrtluci/luci,bright-things/ionic-luci,981213/luci-1,jlopenwrtluci/luci,artynet/luci,Wedmer/luci,bright-things/ionic-luci,openwrt/luci,aa65535/luci,hnyman/luci,openwrt-es/openwrt-luci,wongsyrone/luci-1,ollie27/openwrt_luci,rogerpueyo/luci,aa65535/luci,kuoruan/lede-luci,981213/luci-1,oneru/luci,daofeng2015/luci,shangjiyu/luci-with-extra,openwrt/luci,nmav/luci,bittorf/luci,Noltari/luci,kuoruan/lede-luci,openwrt-es/openwrt-luci,lbthomsen/openwrt-luci,bittorf/luci,taiha/luci,shangjiyu/luci-with-extra,bittorf/luci,chris5560/openwrt-luci,rogerpueyo/luci,981213/luci-1,Wedmer/luci,taiha/luci,bright-things/ionic-luci,daofeng2015/luci,mumuqz/luci,lbthomsen/openwrt-luci,981213/luci-1,teslamint/luci,kuoruan/luci,Noltari/luci,openwrt/luci,cshore-firmware/openwrt-luci,chris5560/openwrt-luci,daofeng2015/luci,rogerpueyo/luci,cshore/luci,wongsyrone/luci-1,mumuqz/luci,cshore-firmware/openwrt-luci,bright-things/ionic-luci,chris5560/openwrt-luci,shangjiyu/luci-with-extra,teslamint/luci,oneru/luci,bittorf/luci,Wedmer/luci,daofeng2015/luci,nmav/luci,remakeelectric/luci,tobiaswaldvogel/luci,cshore/luci,artynet/luci,tobiaswaldvogel/luci,LuttyYang/luci,hnyman/luci,bright-things/ionic-luci,tobiaswaldvogel/luci,openwrt-es/openwrt-luci,nmav/luci,ollie27/openwrt_luci,kuoruan/lede-luci,hnyman/luci,hnyman/luci,daofeng2015/luci,kuoruan/luci,LuttyYang/luci,openwrt-es/openwrt-luci,teslamint/luci,981213/luci-1,kuoruan/luci,remakeelectric/luci,openwrt-es/openwrt-luci,mumuqz/luci,openwrt/luci,rogerpueyo/luci,kuoruan/luci,LuttyYang/luci,ollie27/openwrt_luci,aa65535/luci,jlopenwrtluci/luci,cshore-firmware/openwrt-luci,chris5560/openwrt-luci,Noltari/luci,chris5560/openwrt-luci,daofeng2015/luci,teslamint/luci,Wedmer/luci,cshore-firmware/openwrt-luci,hnyman/luci,artynet/luci,remakeelectric/luci,lbthomsen/openwrt-luci,openwrt-es/openwrt-luci,artynet/luci,oneru/luci,taiha/luci,aa65535/luci,ollie27/openwrt_luci,LuttyYang/luci,tobiaswaldvogel/luci,Noltari/luci,kuoruan/lede-luci,nmav/luci,lbthomsen/openwrt-luci,oneru/luci,wongsyrone/luci-1,artynet/luci,kuoruan/luci,artynet/luci,bittorf/luci,cshore-firmware/openwrt-luci,lbthomsen/openwrt-luci,artynet/luci,teslamint/luci,oneru/luci,taiha/luci,kuoruan/lede-luci,kuoruan/luci,bittorf/luci,tobiaswaldvogel/luci,openwrt-es/openwrt-luci,taiha/luci,nmav/luci,Noltari/luci,981213/luci-1,rogerpueyo/luci,981213/luci-1,taiha/luci,nmav/luci,mumuqz/luci,chris5560/openwrt-luci,artynet/luci,remakeelectric/luci,oneru/luci,jlopenwrtluci/luci,taiha/luci,aa65535/luci,oneru/luci,nmav/luci,shangjiyu/luci-with-extra,wongsyrone/luci-1,cshore-firmware/openwrt-luci,cshore/luci,LuttyYang/luci,jlopenwrtluci/luci,wongsyrone/luci-1,ollie27/openwrt_luci,openwrt-es/openwrt-luci,shangjiyu/luci-with-extra,kuoruan/lede-luci,remakeelectric/luci,LuttyYang/luci,Noltari/luci,mumuqz/luci,Noltari/luci,rogerpueyo/luci,kuoruan/lede-luci,aa65535/luci,teslamint/luci,shangjiyu/luci-with-extra,rogerpueyo/luci,chris5560/openwrt-luci,openwrt/luci,wongsyrone/luci-1,hnyman/luci,Wedmer/luci,cshore-firmware/openwrt-luci,cshore/luci,bright-things/ionic-luci,hnyman/luci,aa65535/luci,daofeng2015/luci,mumuqz/luci