Fix install issue related with  python setuptools-version-command

Change-Id: I1c20bf7253b775b5a8e3fea631eeb89a3dfd8667
Signed-off-by: madavi <jm00553988@techmahindra.com>
diff --git a/tox.ini b/tox.ini
index 4f7d816..a09288a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,7 +15,7 @@
 #    under the License.
 #
 [tox]
-envlist = py27,py35,flake8,pyflakes
+envlist = py35,flake8,pyflakes
 toxworkdir={toxinidir}/.tox
 
 [testenv]
@@ -36,7 +36,7 @@
     pyflakes osmclient
 
 [testenv:build]
-basepython = python
+basepython = python3
 deps = stdeb
        setuptools-version-command
 commands = python setup.py --command-packages=stdeb.command bdist_deb