shorewall6-lite: set the PATH variable

So that it matches LEDE's default PATH value.

Signed-off-by: Brian J. Murrell <brian@interlinx.bc.ca>

net/shorewall6-lite/Makefile

@@ -14,7 +14,7 @@ PKG_BUGFIX_MAJOR_VERSION:=9
 PKG_BUGFIX_MINOR_VERSION:=
 PKG_VERSION:=$(PKG_MAJOR_MINOR_VERSION).$(PKG_BUGFIX_MAJOR_VERSION)$(PKG_BUGFIX_MINOR_VERSION)
 PKG_DIRECTORY:=$(PKG_MAJOR_MINOR_VERSION).$(PKG_BUGFIX_MAJOR_VERSION)
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_URL:=http://www.shorewall.net/pub/shorewall/$(PKG_MAJOR_MINOR_VERSION)/shorewall-$(PKG_DIRECTORY)/ \
 	http://www1.shorewall.net/pub/shorewall/$(PKG_MAJOR_MINOR_VERSION)/shorewall-$(PKG_DIRECTORY)/ \

net/shorewall6-lite/patches/020-set-PATH.patch

@@ -0,0 +1,11 @@
+--- shorewall6-lite-5.1.9/shorewall6-lite.conf.orig	2017-12-17 09:06:52.301331288 -0500
++++ shorewall6-lite-5.1.9/shorewall6-lite.conf	2017-12-17 09:05:55.769714392 -0500
+@@ -36,7 +36,7 @@
+ 
+ IPTABLES=
+ 
+-PATH=
++PATH=/usr/sbin:/usr/bin:/sbin:/bin
+ 
+ SHOREWALL_SHELL=
+