Add recipe name to ios-device-goma-canary-clobber

Bug: 840631
TBR: tandrii
Change-Id: I6261cbc9acb839b8781ca17471290162dad2f0f9
Reviewed-on: https://chromium-review.googlesource.com/1108390Reviewed-by: Ryan Tseng <hinoka@chromium.org>
Commit-Queue: Ryan Tseng <hinoka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568917}

infra/config/global/cr-buildbucket.cfg

@@ -2071,6 +2071,9 @@ buckets {
       dimensions: "os:Mac-10.13"
       dimensions: "cores:4"
       mixins: "fyi-ci"
+      recipe {
+        name: "ios/unified_builder_tester"
+      }
     }
     builders {
       name: "ASan Release (32-bit x86 with V8-ARM)"