Controller: Make Leader Election TTL configurable. #9086

Job	Run time
changes	4s
test-go	3m 51s
Build	3m 39s
Helm chart (v1.26.6)	1h 11m 45s
Helm chart (v1.27.3)	1h 14m 54s
Helm chart (v1.28.0)	1h 9m 46s
Helm chart (v1.29.0)	1h 13m 53s
Kubernetes (v1.26.6) / Kubernetes	51m 37s
Kubernetes (v1.27.3) / Kubernetes	52m 28s
Kubernetes (v1.28.0) / Kubernetes	45m 18s
Kubernetes (v1.29.0) / Kubernetes	49m 27s
Kubernetes chroot (v1.26.6) / Kubernetes CHROOT	47m 23s
Kubernetes chroot (v1.27.3) / Kubernetes CHROOT	45m 54s
Kubernetes chroot (v1.28.0) / Kubernetes CHROOT	44m 43s
Kubernetes chroot (v1.29.0) / Kubernetes CHROOT	45m 15s
Kubernetes with Validations (v1.26.6) / Kubernetes VALIDATIONS	51m 2s
Kubernetes with Validations (v1.27.3) / Kubernetes VALIDATIONS	46m 58s
Kubernetes with Validations (v1.28.0) / Kubernetes VALIDATIONS	50m 32s
Kubernetes with Validations (v1.29.0) / Kubernetes VALIDATIONS	44m 41s
	14h 33m 10s

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