Verify successful block volume expansion

[rishabhatdell]

Description

Previously, cert-csi did not validate whether block volumes were expanded successfully. This PR introduces a polling mechanism that waits for the FileSystemResizeSuccessful event, ensuring that block volume expansions are confirmed as successful.

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#1534

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• Ran VolumeExapnsion Suite for block successfully

[root@master-1-XXXX ~]# ./cert-csi test expansion --sc powerstore-nvme -v 2 -p 3 -block --nm
[2024-10-24 04:31:07]  INFO Starting cert-csi; ver. 1.5.0
[2024-10-24 04:31:07]  INFO Using EVENT observer type
[2024-10-24 04:31:07]  INFO Using config from /etc/kubernetes/admin.conf
[2024-10-24 04:31:07]  INFO Successfully loaded config. Host: https://XX.XXX.XXX.XX:6443
[2024-10-24 04:31:07]  INFO Created new KubeClient
[2024-10-24 04:31:07]  INFO Running 1 iteration(s)
[2024-10-24 04:31:07]  INFO     *** ITERATION NUMBER 1 ***
[2024-10-24 04:31:07]  INFO Starting VolumeExpansionSuite with powerstore-nvme storage class
[2024-10-24 04:31:07]  INFO Successfully created namespace volume-expansion-suite-0fbb1da6
[2024-10-24 04:31:07]  INFO Using default image: quay.io/centos/centos:latest
[2024-10-24 04:31:07]  INFO Creating 3 pods, each with 2 volumes of size (3Gi)
[2024-10-24 04:31:07]  INFO Waiting for all pods in volume-expansion-suite-0fbb1da6 to be READY
[2024-10-24 04:31:21]  INFO All pods are ready in 14.139498792s
[2024-10-24 04:31:21]  INFO Expanding the size of volumes from 3Gi to 6Gi
[2024-10-24 04:31:21]  INFO Waiting for 'FileSystemResizeSuccessful' event for each pod
[2024-10-24 04:32:41]  INFO Pod pod-prov-test-v4c9z: 'FileSystemResizeSuccessful' event detected
[2024-10-24 04:32:41]  INFO Pod pod-prov-test-4cc7f: 'FileSystemResizeSuccessful' event detected
[2024-10-24 04:32:51]  INFO Pod pod-prov-test-xq4cl: 'FileSystemResizeSuccessful' event detected
[2024-10-24 04:32:51]  INFO 'FileSystemResizeSuccessful' event detected for all pods
[2024-10-24 04:32:51]  INFO Deleting all resources in namespace volume-expansion-suite-0fbb1da6
[2024-10-24 04:33:09]  INFO Namespace volume-expansion-suite-0fbb1da6 was deleted in 18.069329258s
[2024-10-24 04:33:09]  INFO SUCCESS: VolumeExpansionSuite in 2m2.36119528s
[2024-10-24 04:33:09]  INFO Started generating reports...
Collecting metrics
1 / 1 [-----------------------------------------------------------------------------------------------------------------------------------------------------------------------] 100.00% ? p/s[2024-10-24 04:33:09]  INFO Avg time of a run:   104.28s
[2024-10-24 04:33:09]  INFO Avg time of a del:   18.07s
[2024-10-24 04:33:09]  INFO Avg time of all:     122.36s
[2024-10-24 04:33:09]  INFO During this run 100.0% of suites succeeded