Overlay: add automation ID to cache key

This commit adds automation ID to the overlay-base database cache key so
that we properly distinguish different analyses in the same repo for the
same language.

Since I am changing the cache key format, I also moved the CodeQL bundle
version to the end of the cache restore key, in case we want to remove
it from the restore key sometime in the future.

Note that I chose to leave CACHE_VERSION unchanged because the old and
the new cache keys are sufficiently different that there should be no
risk of confusion.

src/overlay-database-utils.test.ts

@@ -6,6 +6,7 @@ import test from "ava";
 import * as sinon from "sinon";
 
 import * as actionsUtil from "./actions-util";
+import * as apiClient from "./api-client";
 import * as gitUtils from "./git-utils";
 import { getRunnerLogger } from "./logging";
 import {
@@ -133,6 +134,11 @@ const testDownloadOverlayBaseDatabaseFromCache = test.macro({
 
       const stubs: sinon.SinonStub[] = [];
 
+      const getAutomationIDStub = sinon
+        .stub(apiClient, "getAutomationID")
+        .resolves("test-automation-id/");
+      stubs.push(getAutomationIDStub);
+
       const isInTestModeStub = sinon
         .stub(utils, "isInTestMode")
         .returns(testCase.isInTestMode);