[oadp-1.3] OADP-3598: Update logic to wait for pull secret in pod restore plugin

[openshift-cherrypick-robot]

This is an automated cherry-pick of #236

/assign shubham-pampattiwar

[openshift-ci-robot]

@openshift-cherrypick-robot: Ignoring requests to cherry-pick non-bug issues: OADP-3598

In response to [this](https://github.com/openshift/openshift-velero-plugin/pull/237): >This is an automated cherry-pick of #236 > >/assign shubham-pampattiwar Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=openshift%2Fopenshift-velero-plugin). 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]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: openshift-cherrypick-robot, sseago, weshayutin

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[openshift-ci[bot]]

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