Investigate/Fix test failure on PowerShell Core

• The "suggests corrections for AliasesToExport with wildcard of UseManifestExportFields is currently set as pending when tests are being run using the coreclr.
  This tests needs to be looked into and possibly fixed.
  The test is here:
  https://github.com/PowerShell/PSScriptAnalyzer/blob/021711eae27a2bd00165f30c6c568a78f448870a/Tests/Rules/UseToExportFieldsInManifest.tests.ps1#L86
• There are 9 test failures using PowerShell Core on Windows and Ubuntu but they do not fail in AppVeyor for some reason. Those tests were always failing, even when going back to an old commit like 9e37dd34e8564dc7470dda1e0d2596de37bcd679 in January. Therefore those failures are to be considered technical debt. Until we know why AppVeyor lets them pass and fix them afterwards, we have to more diligent with running tests locally or on VSTS using PowerShell Core to make sure that we do not introduce regression. The test failures are:
  
  

从所引用的测试中的 Tests/Rules/UseToExportFieldsInManifest.tests.ps1 开始，并在 Windows 和 Ubuntu 上使用 PowerShell Core 运行测试套件。将报告的失败与 AppVeyor 结果进行比较，并确定列出的九个失败是测试问题还是环境问题。当这些失败得到解释，且受影响的测试已得到适当修复或更新时，即视为完成。