Migrate cvp-sanity to Python3

* use print function from future
* convert dict keys and values to list
* do not use bunch imports
* fix requirements mismatch
Related: PROD-33849

Change-Id: Ifecc3a9dcdcfe3243f7dcf2c709a80e9a7c765a1
diff --git a/test_set/cvp-sanity/tests/test_oss.py b/test_set/cvp-sanity/tests/test_oss.py
index f28917c..2959681 100644
--- a/test_set/cvp-sanity/tests/test_oss.py
+++ b/test_set/cvp-sanity/tests/test_oss.py
@@ -21,7 +21,7 @@
     proxies = {"http": None, "https": None}
     csv_result = requests.get('http://{}:9600/haproxy?stats;csv"'.format(
                               HAPROXY_STATS_IP),
-                              proxies=proxies).content
+                              proxies=proxies).content.decode()
     data = csv_result.lstrip('# ')
     wrong_data = []
     list_of_services = ['aptly', 'openldap', 'gerrit', 'jenkins', 'postgresql',