Unit tests for SSM package

[Madhur97]

What type of PR is this?
/area testing

What this PR does / why we need it:
This PR increases the unit tests coverage for pkg/cloud/services/ssm package.
Coverage increased from 17.1% to 97.6%

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Part of #2910

Special notes for your reviewer:
Please add missing test scenarios here for tracking, if any.
Checklist:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

Release note:

Add unit tests for `pkg/cloud/services/ssm` package

[k8s-ci-robot]

Hi @Madhur97. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[k8s-ci-robot]

@Madhur97: This issue is currently awaiting triage.

If CAPA/CAPI contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[Ankitasw]

/ok-to-test

[shivi28]

/lgtm

[Ankitasw]

/lgtm

[sedefsavas]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sedefsavas

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• OWNERS [sedefsavas]

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