Makefile: clean egg-info and dist folders

Change-Id: I8cafb46735e53e71f2d08bb23bc730b2b1a6a7a5
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Makefile b/Makefile
index 3da5670..62643b0 100644
--- a/Makefile
+++ b/Makefile
@@ -60,4 +60,4 @@
 	git clone https://github.com/cmoberg/pyang-json-schema-plugin
 
 clean:
-	$(Q)rm -rf build deb deb_dist *.gz pyangbind $(OUT_DIR)
+	$(Q)rm -rf build dist osm_im.egg-info deb deb_dist *.gz pyangbind $(OUT_DIR)