Ensure default nginx configuration file is valid
Default nginx configuration file is not valid and if for some reason middlewared fails to create a new configuration file, nginx doesn't run because of the failed error
We risk breaking default nginx configuration in case middlewared doesn't strat
Default nginx configuration should pass nginx conf test. This can be done by moving /conf/base/etc/local/nginx/nginx.conf to /etc/local/nginx/nginx.conf and using `nginx -t` to see if it passes test or not
Fix default nginx conf file
This commit fixes a bug in default nginx conf file which made nginx fail.