Add metadata provider timeout host config

[liliankasem]

Issue describing the changes in this PR

resolves #10529

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: Link to backporting PR: [in-proc] Add metadata provider timeout host config (#10526) #10545
• My changes do not require documentation changes
  • Otherwise: Documentation issue linked to PR: TODO:// Update host.json spec
• 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 [in-proc] Add metadata provider timeout host config (#10526) #10545
• 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)

Additional information

Adding a metadata provider timeout setting to the host.config to make this value configurable. For logic apps, we will not have a timeout limit.

[fabiocav]

Approved... the tests seem to be unhappy with the string change :). Good change, but no good deed goes unpunished.