Parametrize libraries (#2942)

Add a secret for configuring SP libraries to purge
---

#### Does this PR need a docs update or release note?

- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No

#### Type of change

<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [x] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

#### Issue(s)

<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* #<issue>

#### Test Plan

<!-- How will this be tested prior to merging.-->
- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

.github/actions/purge-m365-user-data/action.yml

@@ -18,6 +18,8 @@ inputs:
     description: User whose data is to be purged.
   site:
     description: Sharepoint site where data is to be purged.
+  libraries:
+    description: List of library names within site where data is to be purged.
   folder-prefix:
     description: Name of the folder to be purged.  If falsy, will purge the set of static, well known folders instead.
   older-than:
@@ -65,7 +67,7 @@ runs:
         M365_TENANT_ADMIN_USER: ${{ inputs.m365-admin-user }}
         M365_TENANT_ADMIN_PASSWORD: ${{ inputs.m365-admin-password }}
       run: |
-        ./onedrivePurge.ps1 -Site ${{ inputs.site }} -FolderPrefixPurgeList ${{ inputs.folder-prefix }} -PurgeBeforeTimestamp ${{ inputs.older-than }}
+        ./onedrivePurge.ps1 -Site ${{ inputs.site }} -LibraryNameList ${{ inputs.libraries }} -FolderPrefixPurgeList ${{ inputs.folder-prefix }} -PurgeBeforeTimestamp ${{ inputs.older-than }}
 
     - name: Reset retention for all mailboxes to 0
       if: ${{ inputs.user == '' }}

.github/workflows/ci_test_cleanup.yml

@@ -30,6 +30,7 @@ jobs:
           user: ${{ secrets[matrix.user] }}
           site: ${{ secrets.CORSO_M365_TEST_SITE_URL}}
           folder-prefix: "Corso_Restore_, TestRestore, testfolder, incrementals_ci_, Alcion_Restore_"
+          libraries: ${{ secrets.CORSO_M365_TEST_SITE_LIBRARIES }}
           older-than: ${{ env.HALF_HOUR_AGO }}
           azure-client-id: ${{ secrets.CLIENT_ID }}
           azure-client-secret: ${{ secrets.CLIENT_SECRET }}

src/cmd/purge/scripts/onedrivePurge.ps1

@@ -70,6 +70,8 @@ function Purge-Library {
         [String[]]$SiteSuffix
     )
 
+    Write-Host "`nPurging library: $LibraryName"
+
     $foldersToPurge = @()
     $folders = Get-PnPFolderItem -FolderSiteRelativeUrl $LibraryName -ItemType Folder