win_get_url doc/strict-mode fixes

plus cleaning up from bad merge

lib/ansible/modules/windows/win_get_url.ps1

@@ -44,9 +44,9 @@ $skip_certificate_validation = Get-Attr $params "skip_certificate_validation" $f
 $username = Get-Attr $params "username"
 $password = Get-Attr $params "password"
 
-$proxy_url = $params.proxy_url
-$proxy_username = $params.proxy_username
-$proxy_password = $params.proxy_password
+$proxy_url = Get-Attr $params "proxy_url"
+$proxy_username = Get-Attr $params "proxy_username"
+$proxy_password = Get-Attr $params "proxy_password"
 
 if($skip_certificate_validation){
   [System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true}
@@ -56,8 +56,8 @@ $force = Get-Attr -obj $params -name "force" "yes" | ConvertTo-Bool
 
 If ($force -or -not (Test-Path $dest)) {
     $client = New-Object System.Net.WebClient
-    if($params.proxy_url) {
-        $proxy_url = $params.proxy_url
+    if($proxy_url) {
+        $proxy_server = New-Object System.Net.WebProxy($proxy_url, $true)
         if($proxy_username -and $proxy_password){
             $proxy_credential = New-Object System.Net.NetworkCredential($proxy_username, $proxy_password)
             $proxy_server.Credentials = $proxy_credential

lib/ansible/modules/windows/win_get_url.py

@@ -70,22 +70,16 @@ options:
       - The full URL of the proxy server to download through.
     version_added: "2.0"
     required: false
-    choices: null
-    default: null
   proxy_username:
     description:
       - Proxy authentication username
     version_added: "2.0"
     required: false
-    choices: null
-    default: null
   proxy_password:
     description:
       - Proxy authentication password
     version_added: "2.0"
     required: false
-    choices: null
-    default: null
 author:
     - "Paul Durivage (@angstwad)"
     - "Takeshi Kuramochi (tksarah)"