Change kube-api default port from 443 to 6443

Operator can specify any port for kube-api (6443 default) This helps in
case where some pods such as Ingress require 443 exclusively.

Closes: 820
Signed-off-by: Sergii Golovatiuk <sgolovatiuk@mirantis.com>

tests/testcases/010_check-apiserver.yml

@@ -4,7 +4,7 @@
   tasks:
   - name: Check the API servers are responding
     uri:
-      url: "https://{{ansible_ssh_host}}/api/v1"
+      url: "https://{{ access_ip | default(ansible_default_ipv4.address) }}:{{ kube_apiserver_port }}/api/v1"
       user: kube
       password: changeme
       validate_certs: no