nut: Fix NUT CGI startup script

Commit c1aa1f784c which backported
a number of fixes from master, missed one fix for nut-cgi.  If
nut-cgi is installed standalone or nut-cgi starts before nut-server
(the default in 18.04.5) then the configuration file directory does
not get create and therefore there is no CGI configuration file.
This commit fixes that.

Closes: #10687

Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>

net/nut/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nut
 PKG_VERSION:=2.7.4
-PKG_RELEASE:=10
+PKG_RELEASE:=11
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.networkupstools.org/source/2.7/

net/nut/files/nut-cgi.init

@@ -29,7 +29,8 @@ nut_upscgi_add() {
 }
 
 start() {
-	rm -f $UPSCGI_C
+	mkdir -m 0755 -p "$(dirname "$UPSCGI_C")"
+	rm -f "$UPSCGI_C"
 
 	config_load nut_cgi