uwsgi: backport master changes to 19.07

To support new luci version uwsgi has been changed.
Backport this changes to 19.07

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

net/uwsgi/files/emperor.ini

@@ -0,0 +1,9 @@
+[uwsgi]
+strict = true
+pidfile = /var/run/uwsgi.pid
+emperor = /etc/uwsgi/vassals/*.ini
+early-emperor = true
+vacuum = true
+emperor-on-demand-directory = /var/run/
+emperor-required-heartbeat = 99
+vassal-set = die-on-idle=true

net/uwsgi/files/uwsgi.init

@@ -0,0 +1,14 @@
+#!/bin/sh /etc/rc.common
+
+START=79
+USE_PROCD=1
+
+start_service() {
+	procd_open_instance
+	procd_set_param command /usr/sbin/uwsgi --ini /etc/uwsgi/emperor.ini
+	procd_set_param stderr 1
+	procd_set_param file /etc/uwsgi/emperor.ini
+	procd_set_param respawn
+	procd_close_instance
+}
+