added service account to Network Chaos NG workload (#870)

Signed-off-by: Tullio Sebastiani <tsebasti@redhat.com>

krkn/scenario_plugins/network_chaos_ng/models.py

@@ -14,6 +14,7 @@ class BaseNetworkChaosConfig:
     wait_duration: int
     test_duration: int
     label_selector: str
+    service_account: str
     instance_count: int
     execution: str
     namespace: str

krkn/scenario_plugins/network_chaos_ng/modules/templates/network-chaos.j2

@@ -4,6 +4,9 @@ metadata:
   name: {{pod_name}}
   namespace: {{namespace}}
 spec:
+  {% if service_account %}
+  serviceAccountName: {{ service_account }}
+  {%endif%}
   {% if host_network %}
   hostNetwork: true
   {%endif%}

krkn/scenario_plugins/network_chaos_ng/modules/utils_network_filter.py

@@ -87,7 +87,8 @@ def deploy_network_filter_pod(
             target=target_node,
             container_name=container_name,
             workload_image=config.image,
-            taints=tolerations
+            taints=tolerations,
+            service_account=config.service_account
         )
     )
 

scenarios/kube/node-network-filter.yml

@@ -3,6 +3,7 @@
   wait_duration: 1
   test_duration: 10
   label_selector: "<node_selector>"
+  service_account: ""
   taints: [] # example ["node-role.kubernetes.io/master:NoSchedule"]
   namespace: 'default'
   instance_count: 1

scenarios/kube/pod-network-filter.yml

@@ -3,6 +3,7 @@
   wait_duration: 1
   test_duration: 60
   label_selector: "<pod_selector>"
+  service_account: ""
   taints: [] # example ["node-role.kubernetes.io/master:NoSchedule"]
   namespace: 'default'
   instance_count: 1