feat: add masked field to role

[cgroschupp]

Description

Add masked fields to OpensearchRole

Close #765

[prudhvigodithi]

Hey @cgroschupp thanks for your contribution, before we get this PR merged, can you please open an issue summarizing this change? This way your contribution is tracked in the issue and later we can link this PR to the issue.

Adding @bbarani @salyh @jochenkressin @pchmielnik @swoehrl-mw

[cgroschupp]

@prudhvigodithi done

[salyh]

Code changes LGTM but CI fails (https://github.com/opensearch-project/opensearch-k8s-operator/actions/runs/8359361554/job/23179427774?pr=762)

@prudhvigodithi not sure if the CI failure is related to #767

[salyh]

Make CI green

[cgroschupp]

@salyh i found the issue with envtest and golang 1.19. i changed envtest to release-16

[cgroschupp]

@salyh forget my last comment, i rebased by branch to use golang 1.22

[salyh]

@cgroschupp Before we can get this PR merged, please refer to the PR guideline and add the mssing prerequisites. Thank you very much.

[prudhvigodithi]

LGTM, @swoehrl-mw or @salyh WDYT?

[swoehrl-mw]

• New field needs to be documented in docs/designs/crd.md
• The extended CRD needs to be copied into the operator helm chart

[cgroschupp]

@swoehrl-mw docs/designs/crd.md is very outdated. Maybe it is better to generate it, see commit: c16cc73

[swoehrl-mw]

docs/designs/crd.md is very outdated. Maybe it is better to generate it, see commit: c16cc73

@cgroschupp
A good idea, but this should be properly introduced in a separate PR that makes sure all parts of the old reference are in code comments and removes the old file. And ideally it should introduce a new automated PR check that the docs have been generated.

[cgroschupp]

@swoehrl-mw i have updated the tests and copied the crds to the helm chart directory. for the api docs generation task i will create a new pr.

[swoehrl-mw]

@salyh Can you please also approve and then merge (seems merge is only allowed after all reviewers who have requested changes have approved)?