adding explicit triggers for CI (#72)

Environments/ASE_SQLDB/Archetype/pipeline.yml

@@ -1,5 +1,7 @@
 variables:
 - group: VDC_SECRETS
+trigger:
+- master
 stages:
 - stage: Validate
   jobs:

Environments/ASE_SQLDB/LandingZone/pipeline.yml

@@ -1,5 +1,7 @@
 variables:
 - group: VDC_SECRETS
+trigger:
+- master
 stages:
 - stage: Validate
   jobs:

Environments/SharedServices/pipeline.yml

@@ -5,6 +5,8 @@
 # Set variables once
 variables:
 - group: VDC_SECRETS
+trigger:
+- master
 stages:
 - stage: Validate
   jobs:

RunAllTestsPipeline.yml

@@ -1,3 +1,7 @@
+trigger:
+  branches:
+    include:
+    - '*'  # must quote since "*" is a YAML reserved character; we want a string
 stages:
 - stage: Test
   jobs: