[UseRubyVersionV0] Migrated to NodeJS10 (microsoft#14143)

* [UseRubyVersionV0] Migrated to NodeJS10

* [UseRubyVersionV0] Addressed code review points.

* Bumped task version

Co-authored-by: Anatolii Bolshakov (Akvelon INC) <v-anbols@microsoft.com>
Co-authored-by: Anatoly Bolshakov <anatoly.bolshakov@akvelon.com>

Author: 3 people

Tasks/UseRubyVersionV0/Tests/L0.ts

@@ -4,7 +4,7 @@ import * as ttm from 'azure-pipelines-task-lib/mock-test';
 
 describe('UseRubyVersion L0 Suite', function () {
 
-    this.timeout(parseInt(process.env.TASK_TEST_TIMEOUT) || 20000);
+    this.timeout(process.env.TASK_TEST_TIMEOUT || 20000);
     before(function () {
     });
 

Tasks/UseRubyVersionV0/Tests/package-lock.json

@@ -17,6 +17,6 @@
   },
   "homepage": "https://github.com/Microsoft/azure-pipelines-tasks#readme",
   "devDependencies": {
-    "@types/mocha": "^2.2.48"
+    "@types/mocha": "^5.2.7"
   }
 }