If sudoing to a user other than root, the home directory of the original user is…

If sudoing to a user other than root, the home directory of the original user is very unlikely to be readable by the
sudoed to user, so just use tmp.  Data will be readable by others (briefly before deletion) but never writeable.

lib/ansible/runner/__init__.py

@@ -641,6 +641,8 @@ class Runner(object):
         basetmp = os.path.join(C.DEFAULT_REMOTE_TMP, basefile)
         if self.remote_user == 'root':
             basetmp = os.path.join('/var/tmp', basefile)
+        elif self.sudo and self.sudo_user != 'root':
+            basetmp = os.path.join('/tmp', basefile)
 
         cmd = 'mkdir -p %s' % basetmp
         if self.remote_user != 'root':