[ATMOSPHERE-392] 2023 1 antelope allow for smoother ingress nginx upgrades (#1799)

Set the wait up from default 300s to 30s for the drain of ingress connections.
(cherry picked from commit 1d7285b)
diff --git a/roles/ingress_nginx/vars/main.yml b/roles/ingress_nginx/vars/main.yml
index 767f55a..48bb883 100644
--- a/roles/ingress_nginx/vars/main.yml
+++ b/roles/ingress_nginx/vars/main.yml
@@ -21,6 +21,7 @@
       digest: "{{ atmosphere_images['ingress_nginx_controller'] | vexxhost.kubernetes.docker_image('digest') }}"
     config:
       proxy-buffer-size: 16k
+      worker-shutdown-timeout: 5s
     dnsPolicy: ClusterFirstWithHostNet
     allowSnippetAnnotations: true
     hostNetwork: true
@@ -42,6 +43,7 @@
           digest: "{{ atmosphere_images['ingress_nginx_kube_webhook_certgen'] | vexxhost.kubernetes.docker_image('digest') }}"
     metrics:
       enabled: true
+    terminationGracePeriodSeconds: 10
   defaultBackend:
     nodeSelector:
       openstack-control-plane: enabled