Skip the web proxy when downloading from proxy endpoint (#7592)

Why I did it
Skip to use the web proxy when the packages have been in the proxy server.
For sai packages or the other packages, we will upload the the proxy server directly, the reproducible will skip to check the site, not necessary to change the version files.

src/sonic-build-hooks/scripts/buildinfo_base.sh

@@ -71,6 +71,12 @@ download_packages()
         if [[ "$para" == *://* ]]; then
             local url=$para
             local real_version=
+
+            # Skip to use the proxy, if the url has already used the proxy server
+            if [[ $url == ${URL_PREFIX}* ]]; then
+                continue
+            fi
+
             if [ "$ENABLE_VERSION_CONTROL_WEB" == y ]; then
                 local version=
                 local filename=$(echo $url | awk -F"/" '{print $NF}' | cut -d? -f1 | cut -d# -f1)