Misc fixes for impish builds

Change-Id: I68825a35c250a76c2293430271f6536d212fba3b
diff --git a/ndns/Makefile b/ndns/Makefile
index e772f81..c6477a6 100644
--- a/ndns/Makefile
+++ b/ndns/Makefile
@@ -11,6 +11,6 @@
 VERSION=0.0.13-g81e9876da
 
 # PPA version
-PPA_VERSION=1
+PPA_VERSION=2
 
 include ../packaging.mk