fiddle - Fix pods_idle metric.

Bug: skia:
Change-Id: Ic6ff4759c61fba369bcccf26e202367ff32ab3d7
Reviewed-on: https://skia-review.googlesource.com/c/181421
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
diff --git a/fiddlek/go/runner/runner.go b/fiddlek/go/runner/runner.go
index 54ee8da..cca141d 100644
--- a/fiddlek/go/runner/runner.go
+++ b/fiddlek/go/runner/runner.go
@@ -347,6 +347,7 @@
 	fastClient := httputils.NewFastTimeoutClient()
 	for _, address := range ips {
 		if ver, ok := singlePodVersion(fastClient, address); ok {
+			idleCount += 1
 			versions[ver] += 1
 		}
 	}