Merge pull request #8793 from cchurch/powershell3_compat

Replace Get-FileHash with MD5 code that works on PowerShell 3.

lib/ansible/runner/shell_plugins/powershell.py

@@ -89,7 +89,10 @@ class ShellModule(object):
         script = '''
             If (Test-Path -PathType Leaf "%(path)s")
             {
-                (Get-FileHash -Path "%(path)s" -Algorithm MD5).Hash.ToLower();
+                $sp = new-object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider;
+                $fp = [System.IO.File]::Open("%(path)s", [System.IO.Filemode]::Open, [System.IO.FileAccess]::Read);
+                [System.BitConverter]::ToString($sp.ComputeHash($fp)).Replace("-", "").ToLower();
+                $fp.Dispose();
             }
             ElseIf (Test-Path -PathType Container "%(path)s")
             {

library/windows/win_stat.ps1

@@ -53,8 +53,11 @@ Else
 
 If ($get_md5 -and $result.stat.exists -and -not $result.stat.isdir)
 {
-   $path_md5 = (Get-FileHash -Path $path -Algorithm MD5).Hash.ToLower();
-   Set-Attr $result.stat "md5" $path_md5;
+    $sp = new-object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider;
+    $fp = [System.IO.File]::Open($path, [System.IO.Filemode]::Open, [System.IO.FileAccess]::Read);
+    $hash = [System.BitConverter]::ToString($sp.ComputeHash($fp)).Replace("-", "").ToLower();
+    $fp.Dispose();
+    Set-Attr $result.stat "md5" $hash;
 }
 
 Exit-Json $result;