dsinstance: Restore context after changing dse.ldif

Fixes https://pagure.io/freeipa/issue/7150

Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipaserver/install/dsinstance.py

@@ -596,6 +596,7 @@ class DsInstance(service.Service):
                 parser.parse()
             new_dse_ldif.flush()
         shutil.copy2(temp_filename, dse_filename)
+        tasks.restore_context(dse_filename)
         try:
             os.remove(temp_filename)
         except OSError as e: