Add staging branches to azure pipeline testing

The name matches for azure pipelines to run excluded staging branches.
This adds them in.

Not sure this is desired, but it's here if we want it.

Author: Greg Roth

azure-pipelines.yml

@@ -1,10 +1,12 @@
 trigger:
   - main
   - release*
+  - staging*
 
 pr: 
   - main
   - release*
+  - staging*
 
 resources:
 - repo: self