Adding AAD based security principal for PublicPreview#13345

PhoenixHe-NV merged 8 commits intomasterAzure/azure-rest-api-specs:masterfrom

syhamza/task/update_confidential-ledger_preview_with_aad_security_principalAzure/azure-rest-api-specs:syhamza/task/update_confidential-ledger_preview_with_aad_security_principalCopy head branch name to clipboard