devtools: bump up depotview mem limit

It used to be at 128Mi, which is a bit small considering this clones
hscloud into memory.

This is a quick fix, a better thing to do would be to have some storage
for depotview to clone into, instead of serving fully from RAM.

Change-Id: I619d39a0d61f5de9bdeef1f46262c78ea33a19fc

devtools/kube/depotview.libsonnet

@@ -10,7 +10,12 @@ local kube = import "../../kube/kube.libsonnet";
         local depotview = self,
         cfg+: {
             image: cfg.image,
-            container: depotview.GoContainer("main", "/devtools/depotview") {}
+            container: depotview.GoContainer("main", "/devtools/depotview") {
+                resources: {
+                    requests: { cpu: "25m", memory: "256Mi" },
+                    limits: { cpu: "500m", memory: "512Mi" },
+                },
+            }
         },
     }
 }