Bug 1559975 - Add future imports to testing/remotecppunittests.py and testing/runcppunittests.py and remove them from py2 exclusion list r=ahal

Differential Revision: https://phabricator.services.mozilla.com/D35246

--HG--
extra : moz-landing-system : lando

testing/remotecppunittests.py

@@ -4,6 +4,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+from __future__ import absolute_import, print_function
 import os
 import sys
 import subprocess

testing/runcppunittests.py

@@ -4,7 +4,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-from __future__ import with_statement
+from __future__ import absolute_import, print_function, with_statement
 import sys
 import os
 from optparse import OptionParser

tools/lint/py2.yml

@@ -39,8 +39,6 @@ py2:
         - testing/mochitest
         - testing/mozharness
         - testing/raptor
-        - testing/remotecppunittests.py
-        - testing/runcppunittests.py
         - testing/runtimes
         - testing/tools
         - testing/tps