Update labels of issue templates (#13351)

* Update labels of issue template

* Update triage label to be consistent with AzureSDK

Author: dingmeng-xue

.github/ISSUE_TEMPLATE/az-module-bug-report.md

@@ -2,7 +2,7 @@
 name: Az module bug report
 about: Report errors or unexpected behaviors for the Az module
 title: ''
-labels: triage
+labels: needs-triage
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/azurerm-module-bug-report.md

@@ -2,7 +2,7 @@
 name: AzureRM module bug report
 about: Report errors or unexpected behaviors for the AzureRM module
 title: ''
-labels: triage
+labels: needs-triage, AzureRM 6.x
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,7 +2,7 @@
 name: Feature request
 about: Suggest a new feature or improvement
 title: ''
-labels: Azure PS Team, Feature Request, triage
+labels: feature-request, needs-triage
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/internal-issue.md

@@ -2,7 +2,7 @@
 name: Internal issue
 about: Azure PowerShell team only
 title: ''
-labels: Azure PS Team, triage
+labels: needs-triage, Engineering
 assignees: ''
 
 ---