submodules: add igmpproxy

.gitmodules

@@ -236,4 +236,8 @@
 [submodule "packages/vyos-xe-guest-utilities"]
 	path = packages/vyos-xe-guest-utilities
 	url = http://github.com/vyos/vyos-xe-guest-utilities.git
+	branch = current
+[submodule "packages/igmpproxy"]
+	path = packages/igmpproxy
+	url = https://github.com/vyos/igmpproxy.git
 	branch = current

packages/igmpproxy

@@ -0,0 +1 @@
+Subproject commit 1f87c675725bff8f380bf7364c3961ee5a5a9e4f

scripts/build-submodules

@@ -83,10 +83,8 @@ package_in_buildlist() {
   if [[ $BUILDLIST =~ (^|[[:space:]])$1($|[[:space:]]) ]]; then
     return 0
   fi
-  
-  return 1
 
- 
+  return 1
 }
 
 build_package() {
@@ -207,6 +205,7 @@ for PKG in mdns-repeater \
            eventwatchd \
            ddclient \
            rtrlib \
+           igmpproxy \
            libvyosconfig \
            vyatta-bash \
            vyatta-biosdevname \