Pin k8s lib versions

Releated: PROD-28810
Change-Id: I1ccee8c2a1e3468d500ac7fc722d7cf0824cf3f9
diff --git a/tcp_tests/requirements.txt b/tcp_tests/requirements.txt
index 54c2cdd..1fc188c 100644
--- a/tcp_tests/requirements.txt
+++ b/tcp_tests/requirements.txt
@@ -15,7 +15,7 @@
 jira
 testrail<=0.3.8
 functools32
-kubernetes
+kubernetes<9.0.0
 salt-pepper<=0.5.3
 setuptools<=36.2.0
 netaddr