[JENKINS-56140] Expire Kubernetes clients after one day

[carlossg]

Make it configurable too

[FilipB]

I assume that the default value of org.csanchez.jenkins.plugins.kubernetes.clients.cacheExpiration can be overwritten when the jenkins is started with -Dorg.csanchez.jenkins.plugins.kubernetes.clients.cacheExpiration=numberOfSeconds right?

[carlossg]

correct

[DmitriyStoyanov]

Thank you for this solution, today found, that on AWS EKS cluster token creates with 14 minutes expiration time and connection created only one time after 15 minutes cannot be used with exception:
io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: GET at: https://xxx.us-east-1.eks.amazonaws.com/api/v1/namespaces/kubernetes-plugin/pods?labelSelector=jenkins%3Dslave. Message: Unauthorized! Token may have expired! Please log-in again. Unauthorized.
fixed by adding -Dorg.csanchez.jenkins.plugins.kubernetes.clients.cacheExpiration=60 in jenkins start parameters.