Allow py27 test selection

Allow test selection for the py27 tests when using tox.

See [1].

[1] https://docs.openstack.org/os-testr/latest/user/ostestr.html#notes-for-running-with-tox

Change-Id: I49b063dfb8e93648f608f2ca9de33c6d621d3642

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index c4b6d15c..e283571a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,7 +33,7 @@ commands =
 
 [testenv:py27]
 commands = {[testenv]commands}
-           ostestr --slowest --serial
+           ostestr {posargs} --slowest --serial
 
 [py3base]
 commands = ostestr --slowest --blacklist-file=blacklist-py3.txt --serial --regex '.*'