chore(integration-tests): Normalize DB config + use single process (#2077)

integration-tests/plugins/jest.config.js

@@ -15,6 +15,7 @@ module.exports = {
   ],
   transformIgnorePatterns: [`/dist`],
   transform: { "^.+\\.[jt]s$": `../../jest-transformer.js` },
+  setupFiles: ["../setup-env.js"],
   setupFilesAfterEnv: ["../setup.js"],
   globalSetup: "../globalSetup.js",
   globalTeardown: "../globalTeardown.js",