Add Gateway resource to openshift python wrapper for Service Mesh.

Author: ofirnash1

ocp_resources/gateway.py

@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+
+from ocp_resources.resource import NamespacedResource
+
+
+class Gateway(NamespacedResource):
+    """
+    Gateway object.
+    """
+
+    api_version = NamespacedResource.ApiGroup.NETWORKING_ISTIO_IO

ocp_resources/resource.py

@@ -283,6 +283,7 @@ class ApiGroup:
         NETWORKADDONSOPERATOR_NETWORK_KUBEVIRT_IO = (
             "networkaddonsoperator.network.kubevirt.io"
         )
+        NETWORKING_ISTIO_IO = "networking.istio.io"
         NETWORKING_K8S_IO = "networking.k8s.io"
         NMSTATE_IO = "nmstate.io"
         NODEMAINTENANCE_KUBEVIRT_IO = "nodemaintenance.kubevirt.io"
@@ -312,6 +313,7 @@ class ApiVersion:
         V1 = "v1"
         V1BETA1 = "v1beta1"
         V1ALPHA1 = "v1alpha1"
+        V1ALPHA3 = "v1alpha3"
 
     def __init__(
         self,