Update npmauth to handle retries cleanly (#15962)

Author: zhenghao104

Tasks/NpmAuthenticateV0/npmauth.ts

@@ -118,6 +118,9 @@ async function main(): Promise<void> {
 main().catch(error => {
     if(tl.getVariable("NPM_AUTHENTICATE_TEMP_DIRECTORY")) {
         tl.rmRF(tl.getVariable("NPM_AUTHENTICATE_TEMP_DIRECTORY"));
+        // Clear the variables after we rm-rf the main root directory
+        tl.setVariable("SAVE_NPMRC_PATH", "", false);
+        tl.setVariable("NPM_AUTHENTICATE_TEMP_DIRECTORY", "", false);
     } 
     tl.setResult(tl.TaskResult.Failed, error);
 });

Tasks/NpmAuthenticateV0/task.json

@@ -9,7 +9,7 @@
     "author": "Microsoft Corporation",
     "version": {
         "Major": 0,
-        "Minor": 198,
+        "Minor": 200,
         "Patch": 0
     },
     "runsOn": [

Tasks/NpmAuthenticateV0/task.loc.json

@@ -9,7 +9,7 @@
   "author": "Microsoft Corporation",
   "version": {
     "Major": 0,
-    "Minor": 198,
+    "Minor": 200,
     "Patch": 0
   },
   "runsOn": [