feat(gke-hyperdisk): improve FIO test validation

Updates the `test-gke-managed-hyperdisk.yml` ansible playbook to
reliably execute the FIO benchmark.

- Removes redundant debugging tasks.
- Makes the job wait condition more specific.
- Adds logging of the FIO test output.
- Adds a cleanup step to delete the FIO job.

Author: Neelabh94

tools/cloud-build/daily-tests/ansible_playbooks/test-validation/test-gke-managed-hyperdisk.yml

@@ -12,38 +12,45 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+- name: Assert variables are defined
+  ansible.builtin.assert:
+    that:
+    - region is defined
+    - custom_vars.project is defined
+
 - name: Get cluster credentials for kubectl
   delegate_to: localhost
   ansible.builtin.command: gcloud container clusters get-credentials {{ deployment_name }} --region {{ cli_deployment_vars.region }} --project {{ custom_vars.project }} --verbosity=debug
 
-- name: List files in deployment directory
-  delegate_to: localhost
-  ansible.builtin.shell: |
-    ls -l {{ workspace }}/{{ deployment_name }}
-  register: file_list
-
-- name: Print file list
-  ansible.builtin.debug:
-    var: file_list.stdout_lines
-
-- name: Execute the job
+- name: Run the FIO benchmark job
   delegate_to: localhost
   ansible.builtin.shell: |
-    job=({{ workspace }}/{{ deployment_name }}/fio-benchmark.yaml)
-    kubectl create -f "$job" -v=9
+    kubectl create -f {{ workspace }}/{{ deployment_name }}/fio-benchmark.yaml -v=9
   args:
     executable: /bin/bash
-  changed_when: False
 
-- name: Wait for job to complete
+- name: Wait for FIO Job to complete
   delegate_to: localhost
-  ansible.builtin.command: |
-    kubectl get job --field-selector  status.successful=1 -v=9
-  register: job_completion
-  until: job_completion.stdout_lines | length > 0
+  ansible.builtin.shell: |
+    kubectl get job fio-benchmark --field-selector status.successful=1 -v=9
+  register: fio_job_completion
+  until: fio_job_completion.stdout_lines | length > 1
   retries: 80
   delay: 15
 
-- name: Print job_completion debug output
-  ansible.builtin.debug:
-    var: job_completion.stdout_lines
+- name: Fetch logs from the FIO job pod and save to fio_pod_logs.txt
+  delegate_to: localhost
+  ansible.builtin.shell: |
+    pod_name="$(kubectl get pods --no-headers -o custom-columns="Name:.metadata.name" -l job-name=fio-benchmark)"
+    kubectl logs ${pod_name} > fio_pod_logs.txt
+    cat fio_pod_logs.txt
+  register: fio_test_logs
+
+- name: Print the FIO test logs
+  debug:
+    msg: "{{fio_test_logs.stdout}}"
+
+- name: Clean up FIO job
+  delegate_to: localhost
+  ansible.builtin.shell: |
+    kubectl delete job fio-benchmark -v=9