[oadp-1.3] OADP-3052: Fix VSL secret data validation

[openshift-cherrypick-robot]

This is an automated cherry-pick of #1326

/assign kaovilai

[openshift-ci-robot]

@openshift-cherrypick-robot: Ignoring requests to cherry-pick non-bug issues: OADP-3052

In response to [this](https://github.com/openshift/oadp-operator/pull/1515): >This is an automated cherry-pick of #1326 > >/assign kaovilai 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.

[openshift-ci[bot]]

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[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kaovilai, openshift-cherrypick-robot, shubham-pampattiwar

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/openshift/oadp-operator/blob/oadp-1.3/OWNERS)~~ [kaovilai,shubham-pampattiwar] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[shubham-pampattiwar]

/lgtm