[ci] Improve triggers and support test signing (#12)

Updates the CI trigger to run against `main`, `release/*`, and any tags
that are created for releases.  The PR trigger has also been updated to
run against main.

Support for "Test" signing has been added, and should help us save some
time when running PR builds or CI builds against non-release branches.

Author: pjcollins

build-tools/automation/azure-pipelines.yml

@@ -1,10 +1,14 @@
 trigger:
-- main
-- release/*
-- dev/*
+  branches:
+    include:
+    - main
+    - release/*
+  tags:
+    include:
+    - '*'
 
 pr:
-- none
+- main
 
 resources:
   repositories:
@@ -23,7 +27,18 @@ resources:
     name: 1ESPipelineTemplates/1ESPipelineTemplates
     ref: refs/tags/release
 
+parameters:
+- name: SignArtifactsOverride
+  default: false
+- name: Skip1ESComplianceTasks
+  default: false
+
 variables:
+- name: MicroBuildSignType
+  ${{ if or(startsWith(variables['Build.SourceBranch'], 'refs/tags/'), eq(variables['Build.SourceBranch'], 'refs/heads/main'), eq(parameters.SignArtifactsOverride, 'true')) }}:
+    value: Real
+  ${{ else }}:
+    value: Test
 - name: TeamName
   value: XamarinAndroid
 - name: BUILD_DIR
@@ -32,10 +47,8 @@ variables:
   value: 1ESPT-Windows2022
 - name: LinuxPoolImage1ESPT
   value: 1ESPT-Ubuntu22.04
-
-parameters:
-- name: Skip1ESComplianceTasks
-  default: false
+- name: MicroBuildPoolName
+  value: VSEngSS-MicroBuild2022-1ES
 
 extends:
   ${{ if or(eq(variables['Build.Reason'], 'PullRequest'), eq('${{ parameters.Skip1ESComplianceTasks }}', 'true')) }}:
@@ -183,9 +196,6 @@ extends:
     - stage: package
       displayName: Package Stage
       dependsOn: build
-      variables:
-      - name: MicroBuildSignType
-        value: Real
       jobs:
       - job: pack_sign
         displayName: Sign and Zip
@@ -257,9 +267,9 @@ extends:
       - job: sign_verify
         displayName: Verify Signing
         dependsOn: pack_sign
+        condition: and(eq(dependencies.pack_sign.result, 'Succeeded'), eq(variables['MicroBuildSignType'], 'Real'))
         timeoutInMinutes: 240
-        pool:
-          name: VSEngSS-MicroBuild2022-1ES
+        pool: $(MicroBuildPoolName)
         steps:
         - checkout: self
           submodules: recursive
@@ -274,4 +284,3 @@ extends:
           inputs:
             TargetFolders: $(Build.SourcesDirectory)\artifacts
             ExcludeSNVerify: true
-          condition: and(succeededOrFailed(), eq(variables['MicroBuildSignType'], 'Real'))