auth-ui: add e2e tests

Change-Id: Ic8f2f9e032d24eed2d4fd824dcfc26c59d7d915e
diff --git a/core/auth/ui/.gitignore b/core/auth/ui/.gitignore
index cbfcd69..984983f 100644
--- a/core/auth/ui/.gitignore
+++ b/core/auth/ui/.gitignore
@@ -1,3 +1,5 @@
 server
 server_arm64
 server_amd64
+e2e/cache
+e2e/artifacts