enabling leader election in stable overlay

[verult]

What type of PR is this?
/kind feature

What this PR does / why we need it: Enables leader election by default in driver deployment. Prevents controller races when multiple replicas are deployed.

Controller deployment uses a Deployment instead of a StatefulSet, since by default the single controller replica does not run in a dedicated node. See here for detailed rationale.

Which issue(s) this PR fixes:

Fixes #516

Does this PR introduce a user-facing change?:

The driver deployment now has leader election enabled, and the controller deployment uses a Deployment instead of a StatefulSet.

/assign @msau42
/cc @ffilippopoulos

[k8s-ci-robot]

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In response to this:

What type of PR is this?
/kind feature

What this PR does / why we need it: Enables leader election by default in driver deployment. Prevents controller races when multiple replicas are deployed.

Controller deployment uses a Deployment instead of a StatefulSet, since by default the single controller replica does not run in a dedicated node. See here for detailed rationale.

Which issue(s) this PR fixes:

Fixes #516

Does this PR introduce a user-facing change?:

The driver deployment now has leader election enabled, and the controller deployment uses a Deployment instead of a StatefulSet.

/assign @msau42
/cc @ffilippopoulos

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[msau42]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: msau42, verult

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