Update appsettings for functions arm template
Update appsettings for functions arm template

Two things:
1. The dashboard setting should no longer be used. The template has already been updated to use App Insights which is the recommended monitoring solution.
2. The node version should be set to ~10 (this is consistent with behavior of other tools that create javascript function apps)
simongdavies/azure-quickstart-templates,johndowns/azure-quickstart-templates,tfitzmac/azure-quickstart-templates,simongdavies/azure-quickstart-templates,sabbour/azure-quickstart-templates,daltskin/azure-quickstart-templates,johndowns/azure-quickstart-templates,Azure/azure-quickstart-templates,tfitzmac/azure-quickstart-templates,tfitzmac/azure-quickstart-templates,bmoore-msft/azure-quickstart-templates,johndowns/azure-quickstart-templates,simongdavies/azure-quickstart-templates,matt1883/azure-quickstart-templates,slapointe/azure-quickstart-templates,bmoore-msft/azure-quickstart-templates,slapointe/azure-quickstart-templates,Azure/azure-quickstart-templates,nzthiago/azure-quickstart-templates,daltskin/azure-quickstart-templates,simongdavies/azure-quickstart-templates,nilaydshah/azure-quickstart-templates,slapointe/azure-quickstart-templates,neudesic/azure-quickstart-templates,Azure/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,simongdavies/azure-quickstart-templates,neudesic/azure-quickstart-templates,johndowns/azure-quickstart-templates,neudesic/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,slapointe/azure-quickstart-templates,bmoore-msft/azure-quickstart-templates,simongdavies/azure-quickstart-templates,matt1883/azure-quickstart-templates,bmoore-msft/azure-quickstart-templates,simongdavies/azure-quickstart-templates,nzthiago/azure-quickstart-templates,tfitzmac/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,jmservera/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,slapointe/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,jmservera/azure-quickstart-templates,bmoore-msft/azure-quickstart-templates,nilaydshah/azure-quickstart-templates,nilaydshah/azure-quickstart-templates,simongdavies/azure-quickstart-templates,matt1883/azure-quickstart-templates,nilaydshah/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,neudesic/azure-quickstart-templates,johndowns/azure-quickstart-templates,jmservera/azure-quickstart-templates,slapointe/azure-quickstart-templates,matt1883/azure-quickstart-templates,tfitzmac/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,sabbour/azure-quickstart-templates,Azure/azure-quickstart-templates,neudesic/azure-quickstart-templates,sabbour/azure-quickstart-templates,nzthiago/azure-quickstart-templates,nilaydshah/azure-quickstart-templates,nzthiago/azure-quickstart-templates,johndowns/azure-quickstart-templates,nilaydshah/azure-quickstart-templates,nzthiago/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,jmservera/azure-quickstart-templates,simongdavies/azure-quickstart-templates,MCKLMT/azure-quickstart-templates,neudesic/azure-quickstart-templates,sabbour/azure-quickstart-templates,nzthiago/azure-quickstart-templates,Azure/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,takekazuomi/azure-quickstart-templates,daltskin/azure-quickstart-templates,bmoore-msft/azure-quickstart-templates,Azure/azure-quickstart-templates,daltskin/azure-quickstart-templates,tfitzmac/azure-quickstart-templates,jmservera/azure-quickstart-templates,jmservera/azure-quickstart-templates