Update JDK-11 desugared library release script

Exclude internals when building test targets for providing the
undesugaring entry point.

Bug: b/222647019
Change-Id: I3b3d5a69c6b644fc6425072328cb3b5eb6ea0eb8
diff --git a/tools/archive_desugar_jdk_libs.py b/tools/archive_desugar_jdk_libs.py
index 1762c2c..5f3e597 100755
--- a/tools/archive_desugar_jdk_libs.py
+++ b/tools/archive_desugar_jdk_libs.py
@@ -207,7 +207,7 @@
     file.write(hexdigest)
 
 def Undesugar(variant, maven_zip, version, undesugared_maven_zip):
-  gradle.RunGradle(['testJar', 'repackageTestDeps'])
+  gradle.RunGradle(['testJar', 'repackageTestDeps', '-Pno_internal'])
   with utils.TempDir() as tmp:
     with zipfile.ZipFile(maven_zip, 'r') as zip_ref:
       zip_ref.extractall(tmp)