autotest: Make testing with local APs easy

Stop a trend where developers juggle the real dynamic AP list with
a private list of APs they have locally.  Allow them to test with both
types of routers at once.  Ignore relevant files so that git doesn't
complain.

TEST=Added some routers locally, tested against them.  Also tested
with network_WiFiChaosPSK.debug to make sure the real use case isn't
perturbed.
BUG=chromium:303983

Change-Id: I3fcf2c710bc771aec1b19b4526a6b4e50700257b
Reviewed-on: https://chromium-review.googlesource.com/171797
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Kris Rambish <krisr@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
diff --git a/.gitignore b/.gitignore
index c65bc98..ebe65bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,3 +46,5 @@
 /shadow_config.ini
 /site-packages/
 monitor_db.pid
+server/cros/chaos_shadow_ap_list.conf
+server/site_tests/network_WiFiChaosPSK/control.local