Update Jenkins hostname to fix build.

Also added .gitignore entry for new subrepos.

Change-Id: I1eb82a3228b4fc8e345db706000c4ae9ee086fdd
diff --git a/.gitignore b/.gitignore
index cf82f35..ee1967b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,4 +48,6 @@
 apps/olt/
 apps/vtn/
 apps/carrierethernet/
+apps/sadis/
+apps/igmpproxy/