Fixed type errors in 'RemoteDesktopCollections' and 'RemoteDesktopDeployment'

[raandree]

Pull Request

Pester tests failed for 'RemoteDesktopCollections' and 'RemoteDesktopDeploymentMade'. 'SessionHost' defined as an array but is a scalar in the underlying DSC resources.

Pull Request (PR) description

Fixed

• SessionHost is now a scalar in 'RemoteDesktopCollections' and 'RemoteDesktopDeploymentMade'.

Task list

• [x] The PR represents a single logical change. i.e. Cosmetic updates should go in different PRs.
• [x] Added an entry under the Unreleased section of in the CHANGELOG.md as per format.
• [x] Local clean build passes without issue or fail tests (build.ps1 -ResolveDependency).
• [ ] Resource documentation added/updated in README.md.
• [ ] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [x] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [x] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [x] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

---

This change is 

[nyanhp]

Future release of RemoteDesktop DSC resources will support a list of session hosts. I'll convert this PR to a draft until that happens