PS: Add more flow sources and accept test changes.

Author: MathiasVP

powershell/ql/lib/semmle/code/powershell/frameworks/Microsoft.PowerShell.model.yml

@@ -6,6 +6,12 @@ extensions:
       - ["microsoft.powershell.utility!", "Method[read-host].ReturnValue", "stdin"]
       - ["microsoft.powershell.utility!", "Method[select-xml].ReturnValue[path]", "file"]
       - ["microsoft.powershell.utility!", "Method[format-hex].ReturnValue[path]", "file"]
+      - ["microsoft.powershell.utility!", "Method[invoke-webrequest].ReturnValue", "remote"]
+      - ["microsoft.powershell.utility!", "Method[iwr].ReturnValue", "remote"]
+      - ["microsoft.powershell.utility!", "Method[wget].ReturnValue", "remote"]
+      - ["microsoft.powershell.utility!", "Method[curl].ReturnValue", "remote"]
+      - ["microsoft.powershell.utility!", "Method[invoke-restmethod].ReturnValue", "remote"]
+      - ["microsoft.powershell.utility!", "Method[irm].ReturnValue", "remote"]
 
   - addsTo:
       pack: microsoft/powershell-all

powershell/ql/test/library-tests/frameworks/microsoft_powershell/test.ps1

@@ -7,5 +7,5 @@ $xmldata = Select-Xml -Path $path -XPath $xmlQuery # $ type="file stream"
 
 $hexdata = Format-Hex -Path $path -Count 48 # $ type="file stream"
 
-$remote_data1 = Iwr https://example.com/install.ps1 # $ MISSING: type="remote flow source"
-$remote_data2 = Invoke-RestMethod -Uri https://blogs.msdn.microsoft.com/powershell/feed/ # $ MISSING: type="remote flow source"
+$remote_data1 = Iwr https://example.com/install.ps1 # $ type="remote flow source"
+$remote_data2 = Invoke-RestMethod -Uri https://blogs.msdn.microsoft.com/powershell/feed/ # $ type="remote flow source"