nailgun service runs as user 'root'

[Adam Heczko]

It was observed that nailgun service runs as root.
Most likely the service does not require 'root' account privileges, therefore it is recommended to run service with non root user account.

# ps xauw | grep nailgun
root 707 0.0 0.1 199356 5000 ? Ss Jan11 8:15 /usr/sbin/uwsgi -y /etc/nailgun/uwsgi_nailgun.yaml
root 756 0.2 2.2 478796 86012 ? S Jan11 277:44 /usr/sbin/uwsgi -y /etc/nailgun/uwsgi_nailgun.yaml
root 757 0.1 2.1 476704 84712 ? S Jan11 117:32 /usr/sbin/uwsgi -y /etc/nailgun/uwsgi_nailgun.yaml
root 758 0.0 2.1 477604 85196 ? S Jan11 47:01 /usr/sbin/uwsgi -y /etc/nailgun/uwsgi_nailgun.yaml
root 759 0.0 2.1 475332 82096 ? S Jan11 5:31 /usr/sbin/uwsgi -y /etc/nailgun/uwsgi_nailgun.yaml
root 760 0.0 0.0 207780 2352 ? S Jan11 0:00 /usr/sbin/uwsgi -y /etc/nailgun/uwsgi_nailgun.yaml

# netstat -anpe | grep uwsgi
tcp 0 0 0.0.0.0:8001 0.0.0.0:* LISTEN 0 19210 707/uwsgi