Automated cherry pick of #15868: Only run one replica of controller pods on non-HA #15880
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Even when running on workers (using IRSA), if we try to run multiple controllers we may have problems with node-spreading, and we don't necessarily gain any availability, as we need an apiserver lease. Issue kubernetes#15852
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Cherry pick of #15868 on release-1.28.
#15868: Only run one replica of controller pods on non-HA
For details on the cherry pick process, see the cherry pick requests page.