Adjust CI triggers.

azure/CSQP/openzgy-veracode.yml

 name: 'OpenZGY-Veracode'
 
+trigger: none
 schedules:
 - cron: "0 0 * * Fri"
   displayName: Weekly midnight check
@@ -66,4 +67,4 @@ steps:
       createSandBox: false
       failTheBuildIfVeracodeScanDidNotInitiate: true
       failBuildOnPolicyFail: false
-      importResults: false
\ No newline at end of file
+      importResults: false

azure/openzgy-centos8.yml

 # name: 'OpenZGY Linux CentOS 8 py36'
 name: $(Build.BuildID)-centos8
 
-trigger: none
+trigger:
+- master
+
 schedules:
 - cron: "30 3 * * *"
   displayName: Nightly build

azure/openzgy-doc.yml

 name: $(Build.BuildID)-doc
 
+trigger:
+- master
+
 schedules:
 - cron: "1 3 * * *"
   displayName: Nightly build