increase interval and timeout for wait_check_network method

Change-Id: I8490db99270485b0c02cf8e5e911f97f629fc456
diff --git a/tcp_tests/helpers/netchecker.py b/tcp_tests/helpers/netchecker.py
index c83cac4..b233023 100644
--- a/tcp_tests/helpers/netchecker.py
+++ b/tcp_tests/helpers/netchecker.py
@@ -375,8 +375,8 @@
             netchecker_pod_port=netchecker_pod_port).status_code == 400
 
 
-def wait_check_network(k8sclient, namespace='default', works=True, timeout=120,
-                       interval=5, netchecker_pod_port=NETCHECKER_NODE_PORT):
+def wait_check_network(k8sclient, namespace='default', works=True, timeout=300,
+                       interval=10, netchecker_pod_port=NETCHECKER_NODE_PORT):
     helpers.wait_pass(
         lambda: check_network(
             k8sclient, netchecker_pod_port=netchecker_pod_port,