Misc fixes for impish builds

Change-Id: I68825a35c250a76c2293430271f6536d212fba3b
diff --git a/ndnmap-data-collector/Makefile b/ndnmap-data-collector/Makefile
index ba62e47..a61c161 100644
--- a/ndnmap-data-collector/Makefile
+++ b/ndnmap-data-collector/Makefile
@@ -11,6 +11,6 @@
 VERSION=0.1.0-18-gb8e197db
 
 # PPA version
-PPA_VERSION=1
+PPA_VERSION=2
 
 include ../packaging.mk