metrics: Add iperf3 deployment yaml

This PR adds the iperf3 deployment yaml.

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

tests/metrics/network/iperf3_kubernetes/runtimeclass_workloads/iperf3-deployment.yaml

@@ -0,0 +1,44 @@
+#
+# Copyright (c) 2021-2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: iperf3-server-deployment
+  labels:
+    app: iperf3-server
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: iperf3-server
+  template:
+    metadata:
+      labels:
+        app: iperf3-server
+    spec:
+      affinity:
+        nodeAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - weight: 1
+            preference:
+              matchExpressions:
+              - key: kubernetes.io/role
+                operator: In
+                values:
+                - master
+      tolerations:
+        - key: node-role.kubernetes.io/master
+          operator: Exists
+          effect: NoSchedule
+      containers:
+      - name: iperf3-server
+        image: networkstatic/iperf3
+        args: ['-s']
+        ports:
+        - containerPort: 5201
+          name: server
+      terminationGracePeriodSeconds: 0
+      runtimeClassName: kata