install_system_extensions.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
           <dict>
                  <key>attributeSetting</key>
                  <integer>1</integer>
                  <key>choiceAttribute</key>
                  <string>selected</string>
                  <key>choiceIdentifier</key>
                  <string>third</string>
           </dict>
           <dict>
                  <key>attributeSetting</key>
                  <integer>1</integer>
                  <key>choiceAttribute</key>
                  <string>selected</string>
                  <key>choiceIdentifier</key>
                  <string>com.paloaltonetworks.globalprotect.systemext.pkg</string>
            </dict>
</array>
</plist>