Restructure of pester test layout

This restructuring moves tests to a directory name which matches the module
in which the cmdlet resides which should improve the discoverability of a
specific test.
For tests which are not about cmdlets in a module, new directories have been
created to make those tests easier to find as well

test/powershell/Modules/Microsoft.PowerShell.Management/Clear-EventLog.Tests.ps1

@@ -0,0 +1,31 @@
+if ($IsWindows) {
+  #check to see whether we're running as admin in Windows...
+  $windowsIdentity = [Security.Principal.WindowsIdentity]::GetCurrent()
+  $windowsPrincipal = new-object 'Security.Principal.WindowsPrincipal' $windowsIdentity
+  if ($windowsPrincipal.IsInRole("Administrators") -eq $true) {
+      $NonWinAdmin=$false
+  } else {$NonWinAdmin=$true}
+  Describe "Clear-EventLog cmdlet tests" -Tags:DRT {
+    #DRT - CmdLet is NYI - change to -Skip:($NonWinAdmin) when implemented
+    It "should be able to Clear-EventLog" -Pending:($True -Or $NonWinAdmin) {
+      Remove-EventLog -LogName TestLog -ea Ignore
+      {New-EventLog -LogName TestLog -Source TestSource -ea Stop} | Should Not Throw
+      {Write-EventLog -LogName TestLog -Source TestSource -Message "Test" -EventID 1 -ea stop } | Should Not Throw
+      {$result=Get-EventLog -LogName TestLog}                     | Should Not Throw
+      ($result.Count)                                             | Should be 1
+      {Clear-EventLog -LogName TestLog}                           | Should Not Throw
+      $result=Get-EventLog -LogName TestLog -ea Ignore
+      ($result.Count)                                             | Should be 0
+      {Remove-EventLog -LogName TestLog -ea Stop}                 | Should Not Throw
+    }
+    It "should throw 'The Log name 'MissingTestLog' does not exist' when asked to clear a log that does not exist" -Pending:($True -Or $NonWinAdmin) {
+      Remove-EventLog -LogName MissingTestLog -ea Ignore
+      try {Clear-EventLog -LogName MissingTestLog -ea stop; Throw "Previous statement unexpectedly succeeded..."
+      } catch {$_.FullyQualifiedErrorId      | Should Be "Microsoft.PowerShell.Commands.ClearEventLogCommand"}
+    }
+    It "should throw 'System.InvalidOperationException' when asked to clear a log that does not exist" -Pending:($True -Or $NonWinAdmin) {
+      try {Clear-EventLog -LogName MissingTestLog -ea stop; Throw "Previous statement unexpectedly succeeded..."
+      } catch {$_.FullyQualifiedErrorId      | Should Be "Microsoft.PowerShell.Commands.ClearEventLogCommand"}
+    }
+  }
+}