[release/dev17.12] Update yml to support new signing requirements (#80087)

Backport of #80073 to release/dev17.12

/cc @dibarbet @shyamnamboodiripad

## Customer Impact

## Regression

- [ ] Yes
- [ ] No

[If yes, specify when the regression was introduced. Provide the PR or
commit if known.]

## Testing

[How was the fix verified? How was the issue missed previously? What
tests were added?]

## Risk

[High/Medium/Low. Justify the indication by mentioning how risks were
measured and addressed.]

Author: dibarbet

azure-pipelines-official.yml

@@ -279,6 +279,9 @@ extends:
             signType: $(SignType)
             zipSources: false
             feedSource: https://dnceng.pkgs.visualstudio.com/_packaging/MicroBuildToolset/nuget/v3/index.json
+            # Set ConnectedPMEServiceName if the build is a CI build, otherwise it is not needed
+            ${{ if eq(variables['Build.Reason'], 'IndividualCI') }}:
+              ConnectedPMEServiceName: 248d384a-b39b-46e3-8ad5-c2c210d5e7ca
           condition: and(succeeded(), in(variables['SignType'], 'test', 'real'))
 
         - task: PowerShell@2