CNV-46589: Auto-generate meaningful snapshot names

[pcbailey]

📝 Description

Previously, auto-generated snapshot names provided no useful information outside of the VM name. This PR modifies the name format to add creation date and time information to make the auto-generated names more meaningful.

Jira: https://issues.redhat.com/browse/CNV-46589

🎥 Screenshots

Before

After

[openshift-ci-robot]

@pcbailey: This pull request references CNV-46589 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 epic to target the "4.18.0" version, but no target version was set.

In response to [this](https://github.com/kubevirt-ui/kubevirt-plugin/pull/2142): >## 📝 Description > >Previously, auto-generated snapshot names provided no useful information outside of the VM name. This PR modifies the name format to add creation date and time information to make the auto-generated names more meaningful. > >Jira: https://issues.redhat.com/browse/CNV-46589 > >## 🎥 Screenshots > >### Before > > > >### After > > Instructions for interacting with me using PR comments are available [here](https://prow.ci.openshift.org/command-help?repo=kubevirt-ui%2Fkubevirt-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: avivtur, metalice, pcbailey

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[metalice]

/retest