Adding readiness probe timeout to the Redpanda stateful set

[pfcurtis]

No description provided.

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[RafalKorepta]

Just for information that because of Chart.yaml didn't have version bump it is not available atm.

[pfcurtis]

It can wait for the next version bump. I have a private chart in use at the moment.