--use-pep517 when installing wheel for gltf plugin example (#1092)

Author: PProfizi

docs/source/user_guide/create_sites_for_python_operators.ps1

@@ -15,7 +15,7 @@ Write-Host "activate venv"
 
 
 Write-Host "install deps"
-Start-Process "python" -ArgumentList ("-m pip install -r "+$pluginpath+"\requirements.txt --disable-pip-version-check") -NoNewWindow -Wait
+Start-Process "python" -ArgumentList ("-m pip install -r "+$pluginpath+"\requirements.txt --disable-pip-version-check --use-pep517") -NoNewWindow -Wait
 if (Test-Path ($tempfolder + "/venv/Lib/site-packages/__pycache__")){
     Write-Host "remove __pycache__"
     Remove-Item -Recurse -Force ($tempfolder + "/venv/Lib/site-packages/__pycache__")

docs/source/user_guide/create_sites_for_python_operators.sh

@@ -39,7 +39,7 @@ echo "activate venv"
 source ${tempfolder}/venv/bin/activate
 
 echo "install deps"
-python -m pip install -r ${pluginpath}/requirements.txt --disable-pip-version-check
+python -m pip install -r ${pluginpath}/requirements.txt --disable-pip-version-check --use-pep517
 
 SITES=$(find ${tempfolder}/venv/ -type d -name "site-packages")
 echo "SITES"