update setup script to overwrite vscode settings

Author: sam-mfb

setup-gcf-client.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
 
-git config --global credential.helper '!f(){ node ~/gcf-client.js $*; }; f'
+# this line is needed to overwrite vscode which writes its helper to both places
+sudo git config --system --replace-all credential.helper '!f(){ node ~/gcf-client.js $*; }; f'
+
+git config --global --replace-all credential.helper '!f(){ node ~/gcf-client.js $*; }; f'
 git config --global credential.https://dev.azure.com.useHttpPath true