Minor fix: Delegating gcloud command to localhost and adding retry logic (GoogleCloudPlatform#4937)

Author: simrankaurb

tools/cloud-build/daily-tests/ansible_playbooks/tasks/add-instance-labels.yml

@@ -51,4 +51,9 @@
   loop: "{{ gce_instances_list }}"
   loop_control:
     label: "{{ item.name }}"
+  register: update_result
+  until: update_result.rc == 0
+  retries: 5
+  delay: 10
   when: gce_instances_list | length > 0
+  delegate_to: localhost

tools/cloud-build/daily-tests/ansible_playbooks/test-validation/test-preemption.yml

@@ -40,6 +40,10 @@
         AND ({{ instance_id_filter }})
       ' --project={{ project }} --freshness=4h --format="json"
     register: preemption_logs
+    delegate_to: localhost
+    retries: 5
+    delay: 10
+    until: preemption_logs.rc == 0
 
   - name: Display Instance Names being checked
     ansible.builtin.debug: