MGMT-11143: Fix missing DNS entry for reclaim test

During the reclaim test, the error `Get
\"https://api.test-infra-cluster-8102e86e.redhat.com:6443/api/v1\":
dial tcp: lookup api.test-infra-cluster-8102e86e.redhat.com on
10.96.0.10:53: no such host"` was observed in assisted-service.
This adds the spoke cluster's DNS entry to `/etc/hosts` so
assisted-service can resolve the spoke cluster API DNS.

src/tests/test_kube_api.py

@@ -435,6 +435,11 @@ def _late_binding_install(
             nodes.controller.add_dns_host_to_network(
                 network_name="default", api_vip=api_vip, cluster_name=cluster_deployment.ref.name
             )
+            utils.config_etc_hosts(
+                cluster_name=cluster_deployment.ref.name,
+                base_dns_domain=cluster_deployment.get()["spec"]["baseDomain"],
+                api_vip,
+            )
 
         agent_cluster_install.wait_to_be_ready(ready=True)
         Agent.wait_for_agents_to_be_bound(agents)