Add logging for salt-api requests/responses

Change-Id: I0dd73c60cc4364ce5962ddb2520390ad3ee32f06
Closes-Task:#PROD-29994(PROD:29994)
diff --git a/test_set/cvp-sanity/requirements.txt b/test_set/cvp-sanity/requirements.txt
index ad0b58a..b45a29e 100644
--- a/test_set/cvp-sanity/requirements.txt
+++ b/test_set/cvp-sanity/requirements.txt
@@ -1,4 +1,4 @@
-pytest==3.0.6
+pytest==3.7.1
 requests>=2.20.0
 flake8
 PyYAML
@@ -6,3 +6,4 @@
 pygerrit2==2.0.6
 gitpython
 python-ldap
+