TRT-1107: move neverstable cron script here for GH app auth

[sosiouxme]

i don't like having scripts of any size in k8s objects, so i'm moving it here. this also incorporates changes to use our github app auth.

[openshift-ci-robot]

@sosiouxme: This pull request references TRT-1107 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 story to target the "4.19.0" version, but no target version was set.

In response to this:

i don't like having scripts of any size in k8s objects, so i'm moving it here. this also incorporates changes to use our github app auth.

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 openshift-eng/jira-lifecycle-plugin repository.

[dgoodwin]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dgoodwin, sosiouxme

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [dgoodwin,sosiouxme]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[openshift-ci]

@sosiouxme: all tests passed!

Full PR test history. Your PR dashboard.

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-sigs/prow repository. I understand the commands that are listed here.