Remove triggers from pipelines and execute ABID validator on label change

.github/workflows/validate-pr-ab-id.yml

@@ -7,7 +7,7 @@
 name: 'AB#ID Check'
 on: 
   pull_request:
-    types: [opened, reopened, edited]
+    types: [opened, reopened, edited, labeled]
 
 jobs:
 # This action checks your pull request to make sure it is linked to a work item using AB# before you can merge.

azure-pipelines/pull-request-validation/build-consumers.yml

@@ -6,8 +6,6 @@
 # Variable: 'skipConsumerValidationLabel' PR label used to skip the checks in this pipeline
 name: $(date:yyyyMMdd)$(rev:.r)
 
-trigger: none
-
 parameters:
   - name: shouldSkipLongRunningTest
     displayName: Should skip long running test?

azure-pipelines/pull-request-validation/common.yml

@@ -6,14 +6,6 @@ name: $(date:yyyyMMdd)$(rev:.r)
 variables:
   - group: devex-ciam-test
 
-trigger:
-  branches:
-    include:
-    - dev
-    - master
-    - release/*
-  batch: True
-
 resources:
   repositories:
   - repository: self

azure-pipelines/pull-request-validation/common4j.yml

@@ -7,8 +7,6 @@ name: $(date:yyyyMMdd)$(rev:.r)
 variables:
   - group: devex-ciam-test
 
-trigger: none
-
 resources:
   repositories:
   - repository: self