Rebuild image to grab latest changes from stacklight-pytest PROD-37130
Update iperf package

Change-Id: I42bc9317c988bfce8ebb23859f801d85d899e76b
diff --git a/test_set/tox.ini b/test_set/tox.ini
index dee7131..41069b3 100644
--- a/test_set/tox.ini
+++ b/test_set/tox.ini
@@ -2,6 +2,7 @@
 envlist = cvp-sanity,cvp-spt,cvp-stacklight
 skipsdist = TRUE
 deps = pip==20.0.2
+       virtualenv==20.21.0
        setuptools
        wheel
 
@@ -15,12 +16,12 @@
 changedir = cvp-sanity
 
 [testenv:cvp-spt]
-basepython = python2.7
+basepython=python2.7
 deps = -rcvp-spt/requirements.txt
 changedir = cvp-spt
 
 [testenv:cvp-stacklight]
-basepython = python2.7
-install_command = python -m pip install cvp-stacklight/stacklight-pytest {packages}
-deps = -rcvp-stacklight/stacklight-pytest/requirements.txt
+basepython=python2.7
+install_command = python -m pip install cvp-stacklight/ {packages}
+deps = -rcvp-stacklight/requirements.txt
 changedir = cvp-stacklight