Fix errors in existing Unit Tests on Local environment

[hlts2]

WHAT

I fixed the errors in the existing tests.
Additionally, the driver tests were not running on CI, so I modified the actions workflow to enable them. This ensures that the existing driver test code will now run on CI.

WHY

When I run all existing tests in the local environment, the following error occurred. Since I not sure whether the previous driver code was working properly, I have investigated. Upon investigation, I concluded that it was necessary to modify the only test code.

❯ go clean -testcache && go test ./...
ok  	github.com/civo/civo-csi	70.094s
ok  	github.com/civo/civo-csi/e2e	0.006s
{"level":"info","api_url":"https://civo-api.example.com","region":"TEST1","namespace":"default","cluster_id":"12345678","socketFilename":"unix:///var/lib/kubelet/plugins/civo-csi/csi.sock","user_agent":"civo-csi","time":"2024-11-07T18:06:02+09:00","message":"Created a new driver"}
--- FAIL: TestNodePublishVolume (0.00s)
    --- FAIL: TestNodePublishVolume/Bind-mount_the_volume_from_the_general_mount_point_in_to_the_container (0.00s)
        node_server_test.go:129:
            	Error Trace:	/xxx/go/src/github.com/civo/civo-csi/pkg/driver/node_server_test.go:129
            	Error:      	Expected nil, but got: &fs.PathError{Op:"mkdir", Path:"/var/lib/kubelet", Err:0xd}
            	Test:       	TestNodePublishVolume/Bind-mount_the_volume_from_the_general_mount_point_in_to_the_container
        node_server_test.go:132:
            	Error Trace:	/xxx/go/src/github.com/civo/civo-csi/pkg/driver/node_server_test.go:132
            	Error:      	Should be true
            	Test:       	TestNodePublishVolume/Bind-mount_the_volume_from_the_general_mount_point_in_to_the_container
FAIL
FAIL	github.com/civo/civo-csi/pkg/driver	10.012s
FAIL

↑ Error due to permissions when creating a folder in the local environment.

FYI

⚠️ This change focuses on fixing existing unit test error, not adding new ones.
While additional test cases will be considered in the future, I modified the current tests were not running successfully in both local and CI environments.

• The following is the result of all unit test on Local

❯ go clean -testcache && go test ./...
ok  	github.com/civo/civo-csi	70.093s
ok  	github.com/civo/civo-csi/e2e	0.006s
ok  	github.com/civo/civo-csi/pkg/driver	10.012s

• The following is the result of all unit test on CI
  • https://github.com/civo/civo-csi/actions/runs/11718701440/job/32640683855

[hlts2]

Note

In a Kubernetes environment, the /var/lib/kubelet/ directory is used, but when trying to use the same path in unit tests on Local and CI, a permission error occurs.
Since this function(d.NodePublishVolume) involves creating and mounting volumes, I used a temporary directory for test.

[rytswd]

LGTM, thanks!

[hlts2]

@rytswd
Thank you for reviewing it! 🙏
I will merge this PR 🚀