remove forcenew from workerpool fields in cluster resource and added ApplyOnce (#4955)

* remove forcenew from workerpool fields in cluster resource and added ApplyOnce

* doc update

* remove ForceNew lines, added ApplyOnce in vpc taints, Doc Update

* import on create

* log and error change

* remove some deprecated code, updated create and update funcs.

* id vars

* tains not availble in read, no point making it computed

* remove irrelevant update for worker_num in doc related to applyonce

* review comments and vpc testcase

* test import_on_create in classic

* Update ibm/service/kubernetes/resource_ibm_container_vpc_worker_pool.go

Co-authored-by: Zoltán Illés <[email protected]>

* Update ibm/service/kubernetes/resource_ibm_container_vpc_worker_pool.go

Co-authored-by: Zoltán Illés <[email protected]>

* review

* Update ibm/service/kubernetes/resource_ibm_container_vpc_cluster.go

Co-authored-by: Zoltán Illés <[email protected]>

* Update ibm/service/kubernetes/resource_ibm_container_vpc_cluster.go

Co-authored-by: Zoltán Illés <[email protected]>

* Update ibm/service/kubernetes/resource_ibm_container_vpc_cluster.go

Co-authored-by: Zoltán Illés <[email protected]>

* labels apply once in classic cluster resource

* more test steps for classic wp

* more test steps for vpc wp

* kms in create cluster

* comment header year

* conflict fix

* call update after create terrafrom to apply rest of the modifications

* update after cluster creation

* remove enable kms from create, as it is present in update too

---------

Co-authored-by: Zoltán Illés <[email protected]>

Author: attilatabori

ibm/acctest/acctest.go

@@ -532,7 +532,7 @@ func init() {
 
 	KubeVersion = os.Getenv("IBM_KUBE_VERSION")
 	if KubeVersion == "" {
-		KubeVersion = "1.18"
+		KubeVersion = "1.25.9"
 		fmt.Println("[WARN] Set the environment variable IBM_KUBE_VERSION for testing ibm_container_cluster resource else it is set to default value '1.18.14'")
 	}