Upgrade to electron 12 and Node 14 (#3572)

Upgrade to electron 12 and Node 14

- Compute cluster ID for tests
- Switch to temporary appData path while testing

Signed-off-by: Sebastian Malton <sebastian@malton.name>

Co-authored-by: Sebastian Malton <smalton@mirantis.com>
Co-authored-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/extensions/extension-loader.ts

@@ -19,14 +19,14 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-import { app, ipcRenderer, remote } from "electron";
+import { ipcRenderer } from "electron";
 import { EventEmitter } from "events";
 import { isEqual } from "lodash";
 import { action, computed, makeObservable, observable, observe, reaction, when } from "mobx";
 import path from "path";
 import { ClusterStore } from "../common/cluster-store";
 import { broadcastMessage, ipcMainOn, ipcRendererOn, requestMain, ipcMainHandle } from "../common/ipc";
-import { Disposer, getHostedClusterId, Singleton, toJS } from "../common/utils";
+import { Disposer, getHostedClusterId, Singleton, toJS, getPath } from "../common/utils";
 import logger from "../main/logger";
 import type { InstalledExtension } from "./extension-discovery";
 import { ExtensionsStore } from "./extensions-store";
@@ -36,7 +36,7 @@ import type { LensRendererExtension } from "./lens-renderer-extension";
 import * as registries from "./registries";
 
 export function extensionPackagesRoot() {
-  return path.join((app || remote.app).getPath("userData"));
+  return path.join(getPath("userData"));
 }
 
 const logModule = "[EXTENSIONS-LOADER]";