add support for k8s 1.25.0

We have dropped the requirement for the kubernetes-cni version because
that is already defined as a requirement for the kubeadm package.

Signed-off-by: André Martins <andre@cilium.io>

Documentation/concepts/kubernetes/compatibility.rst

@@ -17,12 +17,12 @@ with Cilium. Older Kubernetes versions not listed in this table do not have
 Cilium support. Newer Kubernetes versions, while not listed, will depend on the
 backward compatibility offered by Kubernetes.
 
-+------------------------------------------------------+---------------------------+----------------------------------+
-| k8s Version                                          | k8s NetworkPolicy API     | CiliumNetworkPolicy              |
-+------------------------------------------------------+---------------------------+----------------------------------+
-|                                                      |                           | ``cilium.io/v2`` has a           |
-| 1.16, 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24 | * `networking.k8s.io/v1`_ | :term:`CustomResourceDefinition` |
-+------------------------------------------------------+---------------------------+----------------------------------+
++------------------------------------------------------------+---------------------------+----------------------------------+
+| k8s Version                                                | k8s NetworkPolicy API     | CiliumNetworkPolicy              |
++------------------------------------------------------------+---------------------------+----------------------------------+
+|                                                            |                           | ``cilium.io/v2`` has a           |
+| 1.16, 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25 | * `networking.k8s.io/v1`_ | :term:`CustomResourceDefinition` |
++------------------------------------------------------------+---------------------------+----------------------------------+
 
 Cilium CRD schema validation
 ============================

Documentation/concepts/kubernetes/requirements.rst

@@ -27,6 +27,7 @@ backward compatibility offered by Kubernetes.
 * 1.22
 * 1.23
 * 1.24
+* 1.25
 
 System Requirements
 ===================

Documentation/contributing/testing/e2e.rst

@@ -138,6 +138,7 @@ The Kubernetes tests support the following Kubernetes versions:
 * 1.22
 * 1.23
 * 1.24
+* 1.25
 
 By default, the Vagrant VMs are provisioned with Kubernetes 1.23. To run with any other
 supported version of Kubernetes, run the test suite with the following format:

Documentation/installation/istio.rst

@@ -92,7 +92,7 @@ Download the `cilium enhanced istioctl version 1.10.6-1 <https://github.com/cili
 .. note::
 
    Cilium integration, as presented in this Getting Started Guide, has
-   been tested with Kubernetes releases 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23 and 1.24.
+   been tested with Kubernetes releases 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24 and 1.25.
    This Istio release does not work with Kubernetes 1.16 or older.
 
 Deploy the default Istio configuration profile onto Kubernetes:

contrib/vagrant/scripts/02-install-kubernetes-master.sh

@@ -74,7 +74,6 @@ ExecStart=/usr/bin/kube-apiserver \\
   --etcd-certfile='/var/lib/kubernetes/etcd-k8s-api-server.pem' \\
   --etcd-keyfile='/var/lib/kubernetes/etcd-k8s-api-server-key.pem' \\
   --etcd-servers=https://${controllers_ips[0]}:2379 \\
-  --feature-gates=EndpointSlice=true \\
   --feature-gates=EndpointSliceTerminatingCondition=true \\
   --kubelet-certificate-authority='/var/lib/kubernetes/ca-kubelet.pem' \\
   --kubelet-client-certificate='/var/lib/kubernetes/k8s-api-server.pem' \\

contrib/vagrant/scripts/helpers.bash

@@ -67,7 +67,7 @@ cluster_dns_ipv6=${K8S_CLUSTER_DNS_IPV6:-"FD03::A"}
 cluster_api_server_ipv4=${K8S_CLUSTER_API_SERVER_IPV4:-"172.20.0.1"}
 cluster_api_server_ipv6=${K8S_CLUSTER_API_SERVER_IPV6:-"FD03::1"}
 
-k8s_version="v1.24.2"
+k8s_version="v1.25.0"
 etcd_version="v3.5.4"
 
 function restore_flag {

go.mod

@@ -99,14 +99,14 @@ require (
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
 	gopkg.in/ini.v1 v1.67.0
 	gopkg.in/yaml.v2 v2.4.0
-	k8s.io/api v0.24.2
-	k8s.io/apiextensions-apiserver v0.24.2
-	k8s.io/apimachinery v0.24.2
-	k8s.io/client-go v0.24.2
-	k8s.io/code-generator v0.24.2
-	k8s.io/klog/v2 v2.60.1
-	k8s.io/kube-openapi v0.0.0-20220328201542-3ee0da9b0b42
-	k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9
+	k8s.io/api v0.25.0
+	k8s.io/apiextensions-apiserver v0.25.0
+	k8s.io/apimachinery v0.25.0
+	k8s.io/client-go v0.25.0
+	k8s.io/code-generator v0.25.0
+	k8s.io/klog/v2 v2.70.1
+	k8s.io/kube-openapi v0.0.0-20220803162953-67bda5d908f1
+	k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed
 	sigs.k8s.io/controller-tools v0.6.2
 	sigs.k8s.io/yaml v1.3.0
 )
@@ -141,14 +141,14 @@ require (
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/eapache/channels v1.1.0 // indirect
 	github.com/eapache/queue v1.1.0 // indirect
-	github.com/emicklei/go-restful v2.9.5+incompatible // indirect
+	github.com/emicklei/go-restful/v3 v3.8.0 // indirect
 	github.com/envoyproxy/protoc-gen-validate v0.6.2 // indirect
 	github.com/evanphx/json-patch v5.6.0+incompatible // indirect
 	github.com/fatih/color v1.13.0 // indirect
 	github.com/go-kit/kit v0.12.0 // indirect
 	github.com/go-kit/log v0.2.0 // indirect
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
-	github.com/go-logr/logr v1.2.0 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/go-openapi/analysis v0.21.4 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
@@ -225,8 +225,8 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/gengo v0.0.0-20211129171323-c02415ce4185 // indirect
 	k8s.io/klog v1.0.0 // indirect
-	sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2 // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect
+	sigs.k8s.io/json v0.0.0-20220713155537-f223a00ba0e2 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
 )
 
 replace (
@@ -235,7 +235,7 @@ replace (
 
 	go.universe.tf/metallb => github.com/cilium/metallb v0.1.1-0.20220713202445-9066eee9e0be
 
-	k8s.io/client-go => github.com/cilium/client-go v0.0.0-20220808211112-706606a736d5
+	k8s.io/client-go => github.com/cilium/client-go v0.0.0-20220824093223-b6557c021e53
 
 	// Using private fork of controller-tools. See commit msg for more context
 	// as to why we are using a private fork.