feat: Add SwapConfig to enable and configure swap memory for node pools (#31771)

* feat: Add SwapConfig to enable and configure swap memory for node pools
feat: Add NodeKernelModuleLoading to configure kernel module loading policies for nodes
feat: Add WritableCgroups to the containerd config
feat: Add network_tier_config and accelerator_network_profile to NodePool
feat: Add cluster-level network_tier_config
feat: Add SecretSyncConfig to sync secrets from Secret Manager
feat: Add 'enabled' field to AutoIpamConfig to enable/disable Auto IPAM
feat: Add 'wait_for_drain_duration' to AutoscaledRolloutPolicy in BlueGreenSettings
feat: Add 'end_time_behavior' to MaintenanceExclusionOptions
feat: Add PrivilegedAdmissionConfig for Autopilot clusters
feat: Add MembershipType to Fleet config
feat: Add fields to DNSEndpointConfig to control k8s token and cert authentication via DNS
docs: updated comments for various types, messages, and fields.

PiperOrigin-RevId: 819353076

Source-Link: googleapis/googleapis@63281f4

Source-Link: googleapis/googleapis-gen@ab89673
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* 🦉 Updates from OwlBot post-processor

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google-cloud-container-v1beta1/lib/google/cloud/container/v1beta1/cluster_manager/client.rb

@@ -741,6 +741,14 @@ def update_cluster request, options = nil
             #     in which the node pool's nodes should be located. Changing the locations
             #     for a node pool will result in nodes being either created or removed from
             #     the node pool, depending on whether locations are being added or removed.
+            #
+            #     Warning: It is recommended to update node pool locations in a standalone
+            #     API call. Do not combine a location update with changes to other fields
+            #     (such as `tags`, `labels`, `taints`, etc.) in the same request.
+            #     Otherwise, the API performs a structural modification where changes to
+            #     other fields will only apply to newly created nodes and will not be
+            #     applied to existing nodes in the node pool. To ensure all nodes are updated
+            #     consistently, use a separate API call for location changes.
             #   @param workload_metadata_config [::Google::Cloud::Container::V1beta1::WorkloadMetadataConfig, ::Hash]
             #     The desired workload metadata config for the node pool.
             #   @param name [::String]