Reland: Make clusterfuzz_archive include llvm-symbolizer and sancov.

scripts/slave/recipe_modules/archive/example.expected/cf_archiving_mac.json

Index: scripts/slave/recipe_modules/archive/example.expected/cf_archiving_mac.json
diff --git a/scripts/slave/recipe_modules/archive/example.expected/cf_archiving_mac.json b/scripts/slave/recipe_modules/archive/example.expected/cf_archiving_mac.json
index 03e0971914ec0b3d8aa499512c8a7dd088e120cf..2128c5328fde14c319cb80ecde30c47388105995 100644
--- a/scripts/slave/recipe_modules/archive/example.expected/cf_archiving_mac.json
+++ b/scripts/slave/recipe_modules/archive/example.expected/cf_archiving_mac.json
@@ -3,6 +3,26 @@
     "cmd": [
       "python",
       "-u",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "None/third_party/llvm-build/Release+Asserts/bin/llvm-symbolizer",
+      "[SLAVE_BUILD]/src/out/Release/llvm-symbolizer"
+    ],
+    "name": "Copy llvm-symbolizer"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "None/third_party/llvm-build/Release+Asserts/bin/sancov",
+      "[SLAVE_BUILD]/src/out/Release/sancov"
+    ],
+    "name": "Copy sancov"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "\nimport json, os, sys\nif os.path.exists(sys.argv[1]) and os.path.isdir(sys.argv[1]):\n  with open(sys.argv[2], 'w') as f:\n    json.dump(os.listdir(sys.argv[1]), f)\n",
       "[SLAVE_BUILD]/src/out/Release",
       "/path/to/tmp/json"