Add private_settings.py to the git ignore list
Add private_settings.py to the git ignore list

bcostm/mbed-os,ban4jp/mbed,JasonHow44/mbed,fvincenzo/mbed-os,larks/mbed,YarivCol/mbed-os,RonEld/mbed,pbrook/mbed,mnlipp/mbed,netzimme/mbed-os,brstew/MBED-BUILD,jamesadevine/mbed,cvtsi2sd/mbed-os,devanlai/mbed,hwfwgrp/mbed,kjbracey-arm/mbed,j-greffe/mbed-os,jpbrucker/mbed,FranklyDev/mbed,mazimkhan/mbed-os,geky/mbed,j-greffe/mbed-os,nRFMesh/mbed-os,arostm/mbed-os,Tiryoh/mbed,jrjang/mbed,nabilbendafi/mbed,brstew/MBED-BUILD,brstew/MBED-BUILD,RonEld/mbed,Marcomissyou/mbed,hwfwgrp/mbed,pbrook/mbed,andcor02/mbed-os,naves-thiago/mbed-midi,Marcomissyou/mbed,naves-thiago/mbed-midi,fpiot/mbed-ats,maximmbed/mbed,NXPmicro/mbed,FranklyDev/mbed,CalSol/mbed,Timmmm/mbed,Sweet-Peas/mbed,pradeep-gr/mbed-os5-onsemi,pbrook/mbed,jamesadevine/mbed,j-greffe/mbed-os,hwfwgrp/mbed,larks/mbed,andreaslarssonublox/mbed,logost/mbed,jrjang/mbed,j-greffe/mbed-os,dbestm/mbed,pbrook/mbed,Marcomissyou/mbed,K4zuki/mbed,pi19404/mbed,bentwire/mbed,pedromes/mbed,rosterloh/mbed,masaohamanaka/mbed,NXPmicro/mbed,svastm/mbed,bulislaw/mbed-os,masaohamanaka/mbed,dbestm/mbed,CalSol/mbed,masaohamanaka/mbed,brstew/MBED-BUILD,wodji/mbed,Marcomissyou/mbed,Willem23/mbed,theotherjimmy/mbed,svogl/mbed-os,karsev/mbed-os,adustm/mbed,larks/mbed,adamgreen/mbed,fpiot/mbed-ats,infinnovation/mbed-os,Willem23/mbed,fvincenzo/mbed-os,Sweet-Peas/mbed,theotherjimmy/mbed,fahhem/mbed-os,svogl/mbed-os,Timmmm/mbed,logost/mbed,netzimme/mbed-os,bikeNomad/mbed,NXPmicro/mbed,Willem23/mbed,sg-/mbed-drivers,NordicSemiconductor/mbed,YarivCol/mbed-os,0xc0170/mbed-drivers,nRFMesh/mbed-os,pi19404/mbed,tung7970/mbed-os-1,HeadsUpDisplayInc/mbed,theotherjimmy/mbed,jferreir/mbed,pradeep-gr/mbed-os5-onsemi,HeadsUpDisplayInc/mbed,sam-geek/mbed,nvlsianpu/mbed,K4zuki/mbed,Marcomissyou/mbed,netzimme/mbed-os,fpiot/mbed-ats,kjbracey-arm/mbed,hwfwgrp/mbed,JasonHow44/mbed,nvlsianpu/mbed,catiedev/mbed-os,mikaleppanen/mbed-os,arostm/mbed-os,fvincenzo/mbed-os,sam-geek/mbed,nRFMesh/mbed-os,NitinBhaskar/mbed,monkiineko/mbed-os,autopulated/mbed,betzw/mbed-os,mmorenobarm/mbed-os,bcostm/mbed-os,ryankurte/mbed-os,logost/mbed,jpbrucker/mbed,fanghuaqi/mbed,jamesadevine/mbed,nvlsianpu/mbed,wodji/mbed,tung7970/mbed-os,al177/mbed,cvtsi2sd/mbed-os,CalSol/mbed,c1728p9/mbed-os,mbedmicro/mbed,Shengliang/mbed,devanlai/mbed,devanlai/mbed,EmuxEvans/mbed,EmuxEvans/mbed,bulislaw/mbed-os,RonEld/mbed,j-greffe/mbed-os,kl-cruz/mbed-os,bulislaw/mbed-os,pedromes/mbed,bentwire/mbed,alertby/mbed,svastm/mbed,mbedmicro/mbed,alertby/mbed,arostm/mbed-os,ARM-software/mbed-beetle,monkiineko/mbed-os,ARM-software/mbed-beetle,tung7970/mbed-os,adamgreen/mbed,jeremybrodt/mbed,EmuxEvans/mbed,nvlsianpu/mbed,struempelix/mbed,alertby/mbed,brstew/MBED-BUILD,CalSol/mbed,svogl/mbed-os,fvincenzo/mbed-os,radhika-raghavendran/mbed-os5.1-onsemi,geky/mbed,andreaslarssonublox/mbed,adustm/mbed,naves-thiago/mbed-midi,nabilbendafi/mbed,maximmbed/mbed,autopulated/mbed,bikeNomad/mbed,fpiot/mbed-ats,cvtsi2sd/mbed-os,kl-cruz/mbed-os,RonEld/mbed,nRFMesh/mbed-os,pi19404/mbed,bentwire/mbed,jrjang/mbed,karsev/mbed-os,DanKupiniak/mbed,ban4jp/mbed,rgrover/mbed,fpiot/mbed-ats,pbrook/mbed,mnlipp/mbed,rgrover/mbed,larks/mbed,HeadsUpDisplayInc/mbed,netzimme/mbed-os,catiedev/mbed-os,adustm/mbed,adamgreen/mbed,jeremybrodt/mbed,GustavWi/mbed,fahhem/mbed-os,JasonHow44/mbed,kpurusho/mbed,Archcady/mbed-os,al177/mbed,mmorenobarm/mbed-os,bentwire/mbed,xcrespo/mbed,FranklyDev/mbed,dbestm/mbed,nabilbendafi/mbed,ban4jp/mbed,hwfwgrp/mbed,al177/mbed,GustavWi/mbed,cvtsi2sd/mbed-os,mnlipp/mbed,struempelix/mbed,naves-thiago/mbed-midi,maximmbed/mbed,rosterloh/mbed,rgrover/mbed,NitinBhaskar/mbed,betzw/mbed-os,YarivCol/mbed-os,autopulated/mbed,pradeep-gr/mbed-os5-onsemi,YarivCol/mbed-os,mikaleppanen/mbed-os,mmorenobarm/mbed-os,xcrespo/mbed,CalSol/mbed,sg-/mbed-drivers,mnlipp/mbed,Shengliang/mbed,GustavWi/mbed,dbestm/mbed,Archcady/mbed-os,arostm/mbed-os,svogl/mbed-os,larks/mbed,monkiineko/mbed-os,jpbrucker/mbed,ryankurte/mbed-os,autopulated/mbed,Tiryoh/mbed,svastm/mbed,svastm/mbed,kpurusho/mbed,masaohamanaka/mbed,fanghuaqi/mbed,Sweet-Peas/mbed,ryankurte/mbed-os,getopenmono/mbed,JasonHow44/mbed,devanlai/mbed,andcor02/mbed-os,cvtsi2sd/mbed-os,mmorenobarm/mbed-os,pbrook/mbed,infinnovation/mbed-os,c1728p9/mbed-os,maximmbed/mbed,dbestm/mbed,wodji/mbed,rosterloh/mbed,wodji/mbed,pradeep-gr/mbed-os5-onsemi,Marcomissyou/mbed,Archcady/mbed-os,svogl/mbed-os,theotherjimmy/mbed,ban4jp/mbed,xcrespo/mbed,geky/mbed,betzw/mbed-os,betzw/mbed-os,kpurusho/mbed,getopenmono/mbed,getopenmono/mbed,nabilbendafi/mbed,andcor02/mbed-os,logost/mbed,DanKupiniak/mbed,GustavWi/mbed,screamerbg/mbed,screamerbg/mbed,radhika-raghavendran/mbed-os5.1-onsemi,mazimkhan/mbed-os,rgrover/mbed,Archcady/mbed-os,infinnovation/mbed-os,Tiryoh/mbed,logost/mbed,bikeNomad/mbed,alertby/mbed,nabilbendafi/mbed,Archcady/mbed-os,catiedev/mbed-os,rosterloh/mbed,catiedev/mbed-os,Tiryoh/mbed,mnlipp/mbed,getopenmono/mbed,al177/mbed,bikeNomad/mbed,autopulated/mbed,jeremybrodt/mbed,bulislaw/mbed-os,Tiryoh/mbed,DanKupiniak/mbed,HeadsUpDisplayInc/mbed,xcrespo/mbed,karsev/mbed-os,devanlai/mbed,nRFMesh/mbed-os,jferreir/mbed,jrjang/mbed,radhika-raghavendran/mbed-os5.1-onsemi,Timmmm/mbed,rosterloh/mbed,Tiryoh/mbed,adustm/mbed,adustm/mbed,Sweet-Peas/mbed,catiedev/mbed-os,sam-geek/mbed,andreaslarssonublox/mbed,geky/mbed,fvincenzo/mbed-os,screamerbg/mbed,bulislaw/mbed-os,jpbrucker/mbed,mazimkhan/mbed-os,NXPmicro/mbed,struempelix/mbed,iriark01/mbed-drivers,fanghuaqi/mbed,ban4jp/mbed,jrjang/mbed,netzimme/mbed-os,alertby/mbed,Shengliang/mbed,pi19404/mbed,masaohamanaka/mbed,iriark01/mbed-drivers,adamgreen/mbed,infinnovation/mbed-os,NXPmicro/mbed,sam-geek/mbed,ARM-software/mbed-beetle,theotherjimmy/mbed,mikaleppanen/mbed-os,Shengliang/mbed,sam-geek/mbed,NitinBhaskar/mbed,EmuxEvans/mbed,HeadsUpDisplayInc/mbed,pi19404/mbed,struempelix/mbed,autopulated/mbed,screamerbg/mbed,jpbrucker/mbed,Willem23/mbed,arostm/mbed-os,fanghuaqi/mbed,nRFMesh/mbed-os,rosterloh/mbed,bcostm/mbed-os,brstew/MBED-BUILD,mikaleppanen/mbed-os,kjbracey-arm/mbed,pedromes/mbed,kl-cruz/mbed-os,xcrespo/mbed,pedromes/mbed,cvtsi2sd/mbed-os,al177/mbed,xcrespo/mbed,ryankurte/mbed-os,mnlipp/mbed,theotherjimmy/mbed,mazimkhan/mbed-os,maximmbed/mbed,RonEld/mbed,bremoran/mbed-drivers,radhika-raghavendran/mbed-os5.1-onsemi,svogl/mbed-os,ryankurte/mbed-os,pradeep-gr/mbed-os5-onsemi,jeremybrodt/mbed,mmorenobarm/mbed-os,tung7970/mbed-os-1,fpiot/mbed-ats,karsev/mbed-os,Sweet-Peas/mbed,tung7970/mbed-os-1,tung7970/mbed-os,Timmmm/mbed,karsev/mbed-os,infinnovation/mbed-os,pedromes/mbed,bulislaw/mbed-os,catiedev/mbed-os,netzimme/mbed-os,jamesadevine/mbed,bcostm/mbed-os,adustm/mbed,RonEld/mbed,K4zuki/mbed,fahhem/mbed-os,monkiineko/mbed-os,alertby/mbed,screamerbg/mbed,monkiineko/mbed-os,mikaleppanen/mbed-os,NitinBhaskar/mbed,Shengliang/mbed,0xc0170/mbed-drivers,andreaslarssonublox/mbed,mbedmicro/mbed,bremoran/mbed-drivers,YarivCol/mbed-os,radhika-raghavendran/mbed-os5.1-onsemi,masaohamanaka/mbed,screamerbg/mbed,svastm/mbed,jrjang/mbed,radhika-raghavendran/mbed-os5.1-onsemi,K4zuki/mbed,jferreir/mbed,kl-cruz/mbed-os,FranklyDev/mbed,maximmbed/mbed,mazimkhan/mbed-os,al177/mbed,tung7970/mbed-os-1,FranklyDev/mbed,tung7970/mbed-os,CalSol/mbed,NitinBhaskar/mbed,monkiineko/mbed-os,bentwire/mbed,struempelix/mbed,c1728p9/mbed-os,geky/mbed,mikaleppanen/mbed-os,struempelix/mbed,mbedmicro/mbed,dbestm/mbed,pradeep-gr/mbed-os5-onsemi,getopenmono/mbed,pi19404/mbed,andcor02/mbed-os,EmuxEvans/mbed,jferreir/mbed,tung7970/mbed-os,K4zuki/mbed,naves-thiago/mbed-midi,tung7970/mbed-os-1,andcor02/mbed-os,betzw/mbed-os,kl-cruz/mbed-os,YarivCol/mbed-os,bcostm/mbed-os,betzw/mbed-os,nvlsianpu/mbed,mmorenobarm/mbed-os,andreaslarssonublox/mbed,EmuxEvans/mbed,wodji/mbed,jeremybrodt/mbed,NordicSemiconductor/mbed,kpurusho/mbed,kl-cruz/mbed-os,ban4jp/mbed,NXPmicro/mbed,kpurusho/mbed,jferreir/mbed,arostm/mbed-os,bikeNomad/mbed,mazimkhan/mbed-os,jamesadevine/mbed,nvlsianpu/mbed,fahhem/mbed-os,naves-thiago/mbed-midi,Shengliang/mbed,K4zuki/mbed,Willem23/mbed,Timmmm/mbed,adamgreen/mbed,mbedmicro/mbed,fahhem/mbed-os,fahhem/mbed-os,Sweet-Peas/mbed,kjbracey-arm/mbed,jamesadevine/mbed,Archcady/mbed-os,fanghuaqi/mbed,wodji/mbed,infinnovation/mbed-os,jferreir/mbed,rgrover/mbed,j-greffe/mbed-os,NordicSemiconductor/mbed,c1728p9/mbed-os,larks/mbed,GustavWi/mbed,JasonHow44/mbed,kpurusho/mbed,bentwire/mbed,andcor02/mbed-os,nabilbendafi/mbed,hwfwgrp/mbed,NordicSemiconductor/mbed,devanlai/mbed,HeadsUpDisplayInc/mbed,JasonHow44/mbed,bcostm/mbed-os,c1728p9/mbed-os,ryankurte/mbed-os,c1728p9/mbed-os,jpbrucker/mbed,adamgreen/mbed,getopenmono/mbed,pedromes/mbed,DanKupiniak/mbed,Timmmm/mbed,logost/mbed,ARM-software/mbed-beetle,karsev/mbed-os