Use the new executable for mkuserimg_mke2fs

This is in line with the change of mkuserimg_mke2fs.sh to python binary.

Bug: 112555072
Bug: 63866463
Test: unittests pass
Change-Id: I82c0be1e5bbc685edc15120da73aa43fdc9f2f05
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 3e159a6..3fa3225 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -625,7 +625,7 @@
     if "flash_logical_block_size" in prop_dict:
       build_command.extend(["-o", prop_dict["flash_logical_block_size"]])
     # Specify UUID and hash_seed if using mke2fs.
-    if prop_dict["ext_mkuserimg"] == "mkuserimg_mke2fs.sh":
+    if prop_dict["ext_mkuserimg"] == "mkuserimg_mke2fs":
       if "uuid" in prop_dict:
         build_command.extend(["-U", prop_dict["uuid"]])
       if "hash_seed" in prop_dict: