Set max_microversion 2.35 for nova network tests

The compute os-networks API is deprecated from the Microversion 2.36,
so we should set max_microversion = '2.35' for compute network tests.

ref: https://developer.openstack.org/api-ref/compute/#list-networks

Implements blueprint: clear-deprecated-api

Change-Id: I51d82e9856d6dc8984a4348d9e8ca86c5fe809ab
diff --git a/tempest/api/compute/admin/test_networks.py b/tempest/api/compute/admin/test_networks.py
index 87ce39d..99907a8 100644
--- a/tempest/api/compute/admin/test_networks.py
+++ b/tempest/api/compute/admin/test_networks.py
@@ -26,6 +26,7 @@
     API docs:
     https://developer.openstack.org/api-ref/compute/#networks-os-networks-deprecated
     """
+    max_microversion = '2.35'
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/test_networks.py b/tempest/api/compute/test_networks.py
index b8c79d7..76131e2 100644
--- a/tempest/api/compute/test_networks.py
+++ b/tempest/api/compute/test_networks.py
@@ -20,6 +20,8 @@
 
 
 class ComputeNetworksTest(base.BaseV2ComputeTest):
+    max_microversion = '2.35'
+
     @classmethod
     def skip_checks(cls):
         super(ComputeNetworksTest, cls).skip_checks()