pin pytest lower bound at 4.6.11

we need 4.6 to support Python 2.  however 4.6.0 is too low,
4.6.11 seems to work in both python 2 and 3, pin on that

Change-Id: I0a5995ca5e5bf08a06997130e4ffbaaceef8d942

diff --git a/tox.ini b/tox.ini
index d319979fe9c5e6abbb7a448a8b51df1c6c6e384f..2167d3bb1204acbf9243a3fae2a4e348eabaf365 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,7 @@ install_command=python -m pip install {env:TOX_PIP_OPTS:} {opts} {packages}
 usedevelop=
      cov: True
 
-deps=pytest>4.6  # this can be 6.x once we are on python 3 only
+deps=pytest>=4.6.11 # this can be 6.x once we are on python 3 only
      pytest-xdist
      greenlet
      mock; python_version < '3.3'