Make supervisor more consistent

Configs go in /etc, sockets in /var/run/supervisor for all invocations.

installer/roles/image_build/files/supervisor_task.conf

@@ -1,12 +1,13 @@
 [supervisord]
 nodaemon = True
 umask = 022
+logfile = /dev/stdout
+logfile_maxbytes = 0
+pidfile = /var/run/supervisor/supervisor.pid
 
 [program:dispatcher]
 command = awx-manage run_dispatcher
 directory = /var/lib/awx
-environment = LANGUAGE="en_US.UTF-8",LANG="en_US.UTF-8",LC_ALL="en_US.UTF-8",LC_CTYPE="en_US.UTF-8"
-#user = {{ aw_user }}
 autostart = true
 autorestart = true
 stopwaitsecs = 5
@@ -42,10 +43,10 @@ events=TICK_60
 priority=0
 
 [unix_http_server]
-file=/tmp/supervisor.sock
+file=/var/run/supervisor/supervisor.sock
 
 [supervisorctl]
-serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL  for a unix socket
+serverurl=unix:///var/run/supervisor/supervisor.sock ; use a unix:// URL  for a unix socket
 
 [rpcinterface:supervisor]
 supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface