Reland "[infra] Run recipes through Kitchen"

Bug: skia:7050
Change-Id: Icf0bcfbbc505c90a4e8cee7437037a3037bdf33b
Reviewed-on: https://skia-review.googlesource.com/121781
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
diff --git a/infra/bots/empty.isolate b/infra/bots/empty.isolate
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/infra/bots/empty.isolate
@@ -0,0 +1 @@
+{}