Set readOnlyRootFilesystem as true in Controller and Webhook

[khrm]

Setting Controller's Deployment security context readOnlyRootFilesystem to true to increase the security and to avoid being flagged by the security scanner.

Changes

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Release Notes

Controller's and Webhook's Deployment security context `readOnlyRootFilesystem`  are set to true to increase the security and to avoid being flagged by the security scanner.

[khrm]

/kind security

[savitaashture]

Should we add readOnlyRootFilesystem to EL deployment as well?

[khrm]

We need that via a configuration not only yaml.

[savitaashture]

We need that via a configuration not only yaml.

Yup i was also thinking the same

I was assuming that change should be part of this PR so added review comment

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[khrm]

@savitaashture We can merge this now. There's a pr for EL now.

[savitaashture]

@savitaashture We can merge this now. There's a pr for EL now.

Sure

[savitaashture]

/lgtm