run-postinsts: Use opkg/dpkg to configure when possible

Currently run-postinsts script has code to run postinst scripts
via opkg/dpkg configure but that code is never used. The advantage
of using package managers instead of just executing the scripts is
to keep the package manager DB updated.

Fix the script so that the package managers are used when appropriate.
Also use $localstatedir for the opkg runtime file location.

Fixes [YOCTO #10478].

(From OE-Core rev: b645919f173512f9e75aeb26348d60b63dcdc53c)

Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/run-postinsts/run-postinsts/run-postinsts

@@ -16,23 +16,25 @@ pm_installed=false
 for pm in $backend_list; do
 	pi_dir="#SYSCONFDIR#/$pm-postinsts"
 
-	[ -d $pi_dir ] && break
+	if [ ! -d $pi_dir ]; then
+		continue
+	fi
 
+	# found the package manager, it has postinsts
 	case $pm in
 		"deb")
 			if [ -s "#LOCALSTATEDIR#/lib/dpkg/status" ]; then
 				pm_installed=true
-				break
 			fi
 			;;
 
 		"ipk")
-			if [ -s "/var/lib/opkg/status" ]; then
+			if [ -s "#LOCALSTATEDIR#/lib/opkg/status" ]; then
 				pm_installed=true
-				break
 			fi
 			;;
 	esac
+	break
 done
 
 remove_rcsd_link () {