[gold] Update Frontend to support new gerrit RPC

Bug: skia:10787
Change-Id: I5f42ba552c903b3e5d631ee73ecaf9fd5601c890
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/398938
Reviewed-by: Kevin Lubick <kjlubick@google.com>
diff --git a/golden/k8s-config-templates/gold-common.json5 b/golden/k8s-config-templates/gold-common.json5
index 0158da0..00309db 100644
--- a/golden/k8s-config-templates/gold-common.json5
+++ b/golden/k8s-config-templates/gold-common.json5
@@ -1,7 +1,7 @@
 {
     "BASELINE_SERVER_IMAGE": "gcr.io/skia-public/gold-baseline-server:2021-04-20T13_18_16Z-kjlubick-8119942-clean",
     "DIFFCALCULATOR_IMAGE":  "gcr.io/skia-public/gold-diffcalculator:2021-04-20T13_17_16Z-kjlubick-8119942-clean",
-    "FRONTEND_IMAGE":        "gcr.io/skia-public/gold-frontend:2021-04-09T12_01_19Z-kjlubick-51e5660-clean",
+    "FRONTEND_IMAGE":        "gcr.io/skia-public/gold-frontend:2021-04-21T11_31_53Z-kjlubick-99aa3b8-clean",
     "GITILESFOLLOWER_IMAGE": "gcr.io/skia-public/gold-gitilesfollower:2021-04-09T12_00_48Z-kjlubick-51e5660-clean",
     "INGESTION_IMAGE":       "gcr.io/skia-public/gold-ingestion:2021-04-01T11_57_34Z-kjlubick-73431db-clean",
     "PERIODICTASKS_IMAGE":   "gcr.io/skia-public/gold-periodictasks:2021-04-16T12_08_35Z-kjlubick-a0236fe-clean",