Re-organize Skia recipes

infra/bots/recipes/swarm_trigger.expected/Test-Win8-MSVC-ShuttleA-GPU-HD7770-x86_64-Release.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "\nimport json\nimport sys\n\nwith open(sys.argv[1]) as f:\n  content = json.load(f)\n\nprint json.dumps(content, indent=2)\n",
       "{\"buildername\": \"Test-Win8-MSVC-ShuttleA-GPU-HD7770-x86_64-Release\", \"buildnumber\": 5, \"mastername\": \"client.skia\", \"path_config\": \"kitchen\", \"recipe\": \"swarm_trigger\", \"revision\": \"abc123\", \"slavename\": \"skiabot-linux-swarm-000\"}"
     ],
     "name": "print properties",
     "~followup_annotations": [
@@ skipping 855 matching lines @@
       "[SLAVE_BUILD]/swarming_temp_dir/outputs/test_skia/0/dm",
       "[SLAVE_BUILD]/dm",
       "0"
     ],
     "name": "dm_dir"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "RECIPE_MODULE[skia::skia]/resources/upload_dm_results.py",
+      "RECIPE_MODULE[skia::core]/resources/upload_dm_results.py",
       "[SLAVE_BUILD]/dm",
       "abc123",
       "Test-Win8-MSVC-ShuttleA-GPU-HD7770-x86_64-Release",
       "5",
       "",
       "[SLAVE_BUILD]/skia/common/py/utils"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
     "env": {
       "AWS_CREDENTIAL_FILE": "[HOME]/chromium-skia-gm.boto",
       "BOTO_CONFIG": "[HOME]/chromium-skia-gm.boto"
     },
     "name": "Upload DM Results"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]