Use Where-Object instead of alias in buildmodule.tests.ps1

[kvprasoon]

PR Summary

Use Where-Object instead of ? in BuildModule.tests.ps1

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
• This PR is ready to merge and is not Work in Progress.
  • If the PR is work in progress, please add the prefix WIP: to the beginning of the title and remove the prefix when the PR is ready.

[kvprasoon]

@bergmeister any idea on CI failures ?

[bergmeister]

The first failure is a relatively new, but known sporadic failure, for which PR #1358 has been opened.
The other 4 failures started to happen only this week without a code change in master and are probably due to a breaking change in an AppVeyor image update.
Concluding, don't worry about them, they are unrelated and not blocking your PR from being merged but ideally, we want to have them fixed in master first before merging more PRs.