[1ES] Migrate Scale Metrics to Azure.Data.Tables

[cjaliaga]

This PR migrates the Scale Metrics table storage repository to use Azure.Data.Tables instead Microsoft.Azure.Cosmos.Table

Issue describing the changes in this PR

resolves #10166

Pull request checklist

IMPORTANT: Currently, changes must be backported to the in-proc branch to be included in Core Tools and non-Flex deployments.

• Backporting to the in-proc branch is not required
  • Otherwise: [in-proc] Migrate Scale Metrics to Azure.Data.Tables with support for Identity-based connections #10436
• My changes do not require documentation changes
  • Otherwise: Documentation issue linked to PR
• My changes should not be added to the release notes for the next release
  • Otherwise: I've added my notes to release_notes.md
• My changes do not need to be backported to a previous version
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• My changes do not require diagnostic events changes
  • Otherwise: I have added/updated all related diagnostic events and their documentation (Documentation issue linked to PR)
• I have added all required tests (Unit tests, E2E tests)

[cjaliaga]

Not ready yet, pending:

1. Check what's the best way to migrate the delegating handler usage as the new SDK by default will use a shared HttpClientTransport (same HttpClient) and we might need to pass the HttpClient configured with our DelegatingHandler to the TableServiceClient.

2. Deploy the Private SiteExtension and test some scenarios

[mathewc]

Not ready yet, pending:

1. Check what's the best way to migrate the delegating handler usage as the new SDK by default will use a shared HttpClientTransport (same HttpClient) and we might need to pass the HttpClient configured with our DelegatingHandler to the TableServiceClient.
2. Deploy the Private SiteExtension and test some scenarios

I see. When a PR isn't ready, it's good to mark it as a draft so reviewers know. I converted it to draft just now.

[jviau]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).