tox: move pylint target to 1.7.1

The motivation for this is to make tip-pylint target green.
It does 2 things:
 a.) silence a warning that is generated in pylint 1.7.1, but not
     other versions of pylint.  This bug in pylint is filed at
     https://github.com/PyCQA/pylint/issues/1444
 b.) move tox -e pylint to use pylint 1.7.1

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 826f554e..fce07740 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,7 @@ setenv =
     LC_ALL = en_US.utf-8
 
 [testenv:pylint]
-deps = pylint==1.6.5
+deps = pylint==1.7.1
 commands = {envpython} -m pylint {posargs:cloudinit}
 
 [testenv:py3]