Fix upgrade.sh script error with su -c (#19483)

* Fix scirpt err with `su -c`, add env auto loading.

* Update upgrade.sh

* Update upgrade.sh

* Update contrib/upgrade.sh

Co-authored-by: wxiaoguang <[email protected]>

Co-authored-by: wxiaoguang <[email protected]>

Author: mokeyish

contrib/upgrade.sh

@@ -24,7 +24,8 @@
 
 function giteacmd {
   if [[ $sudocmd = "su" ]]; then
-    "$sudocmd" - "$giteauser" -c "$giteabin" --config "$giteaconf" --work-path "$giteahome" "$@"
+    # `-c` only accept one string as argument.
+    "$sudocmd" - "$giteauser" -c "$(printf "%q " "$giteabin" "--config" "$giteaconf" "--work-path" "$giteahome" "$@")"
   else
     "$sudocmd" --user "$giteauser" "$giteabin" --config "$giteaconf" --work-path "$giteahome" "$@"
   fi