fix: configure Kubernetes feature gates with dictionaries (#13608)

* fix: configure Kubernetes feature gates with dictionaries

* docs: update feature gate settings to dictionaries

tests/files/fedora43-calico-swap-selinux.yml

@@ -11,4 +11,4 @@ preinstall_selinux_state: enforcing
 # Test Alpha swap feature by leveraging zswap default config in Fedora 35
 kubelet_fail_swap_on: false
 kube_feature_gates:
-  - "NodeSwap=True"
+  NodeSwap: true

tests/files/fedora44-calico-swap-selinux.yml

@@ -11,4 +11,4 @@ preinstall_selinux_state: enforcing
 # Test Alpha swap feature by leveraging zswap default config in Fedora 35
 kubelet_fail_swap_on: false
 kube_feature_gates:
-  - "NodeSwap=True"
+  NodeSwap: true

tests/files/ubuntu24-calico-all-in-one-hardening.yml

@@ -64,7 +64,8 @@ kube_profiling: false
 ## kube-controller-manager
 kube_controller_manager_bind_address: 127.0.0.1
 kube_controller_terminated_pod_gc_threshold: 50
-kube_controller_feature_gates: ["RotateKubeletServerCertificate=true"]
+kube_controller_feature_gates:
+  RotateKubeletServerCertificate: true
 
 ## kube-scheduler
 kube_scheduler_bind_address: 127.0.0.1
@@ -86,7 +87,8 @@ kubelet_event_record_qps: 1
 kubelet_rotate_certificates: true
 kubelet_streaming_connection_idle_timeout: "5m"
 kubelet_make_iptables_util_chains: true
-kubelet_feature_gates: ["RotateKubeletServerCertificate=true"]
+kubelet_feature_gates:
+  RotateKubeletServerCertificate: true
 kubelet_seccomp_default: true
 kubelet_systemd_hardening: true
 # In case you have multiple interfaces in your