ostbuild: Copy snapshot JSON into artifact trees

This is kind of a hack...but...

src/ostbuild/pyostbuild/builtin_chroot_compile_one.py

@@ -141,5 +141,7 @@ class OstbuildChrootCompileOne(builtins.Builtin):
         env_copy = dict(buildutil.BUILD_ENV)
         env_copy['PWD'] = chroot_sourcedir
         run_sync(child_args, env=env_copy, keep_stdin=args.debug_shell)
+
+        shutil.copy(build_manifest_path, resultdir)
         
 builtins.register(OstbuildChrootCompileOne)