OADP-3562: Fix controller panic on secret key-value parsing

[stillalearner]

Fixes -> https://issues.redhat.com/browse/OADP-3562

Tested successfully with empty value for key.

status: conditions:

• lastTransitionTime: "2024-09-24T09:04:15Z" message: secret parsing error in key AZURE_STORAGE_ACCOUNT_ACCESS_KEY reason: Error status: "False" type: Reconciled

[openshift-ci-robot]

@stillalearner: This pull request references OADP-3562 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the bug to target the "4.18.0" version, but no target version was set.

In response to [this](https://github.com/openshift/oadp-operator/pull/1529): >Fixes -> https://issues.redhat.com/browse/OADP-3562 > >Tested successfully with empty value for key. > >status: > conditions: > - lastTransitionTime: "2024-09-24T09:04:15Z" > message: secret parsing error in key AZURE_STORAGE_ACCOUNT_ACCESS_KEY > reason: Error > status: "False" > type: Reconciled > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Foadp-operator). If you have questions or suggestions related to my behavior, please file an issue against the [openshift-eng/jira-lifecycle-plugin](https://github.com/openshift-eng/jira-lifecycle-plugin/issues/new) repository.

[kaovilai]

/hold for CI fix

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kaovilai, mateusoliveira43, shubham-pampattiwar, stillalearner

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/openshift/oadp-operator/blob/master/OWNERS)~~ [kaovilai,mateusoliveira43,shubham-pampattiwar] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[mateusoliveira43]

/unhold E2E tests are working again

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD ce8546dce4d513c06c53ce4841881561cd18d974 and 2 for PR HEAD 8d9f5f5810d79f2f7f6d436bf6d95e20c0d4d910 in total

[openshift-ci[bot]]

@stillalearner: all tests passed!

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