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-Content.Tests.ps1

@@ -0,0 +1,26 @@
+Describe "Clear-Content cmdlet tests" -Tags:DRT {
+  $file1 = "file1.txt"
+  Setup -File "$file1"
+
+  Context "Clear-Content should actually clear content" {
+    It "should clear-Content of testdrive:\$file1" {
+      set-content -path testdrive:\$file1 -value "ExpectedContent" -passthru | Should be "ExpectedContent"
+      clear-content -Path testdrive:\$file1
+    }
+    It "shouldn't get any content from testdrive:\$file1" {
+      $result = get-content -path testdrive:\$file1
+      $result | Should BeExactly $null
+    }
+    It "should throw `"Cannot bind argument to parameter 'Path'`" when -Path is `$null" {
+      {clear-content -path $null -ea stop} | Should Throw "Cannot bind argument to parameter 'Path'"
+    }
+    #[BugId(BugDatabase.WindowsOutOfBandReleases, 903880)]
+    It "should throw `"Cannot bind argument to parameter 'Path'`" when -Path is `$()" {
+      {clear-content -path $() -ea stop} | Should Throw "Cannot bind argument to parameter 'Path'"
+    }
+    #[DRT][BugId(BugDatabase.WindowsOutOfBandReleases, 906022)]
+    It "should throw 'PSNotSupportedException' when you set-content to an unsupported provider" -Skip:($IsLinux -Or $IsOSX) {
+      {clear-content -path HKLM:\\software\\microsoft -ea stop} | Should Throw "IContentCmdletProvider interface is not implemented"
+    }
+  }
+}