Wait for available API token in a new namespace

Just after creating a namespace, the corresponding token could not be
created and sometimes the pod creation might be failed.
This adds check of the token in the new namespace to make this test
case stable.

tests/testcases/030_check-network.yml

@@ -43,6 +43,16 @@
     command: "{{ bin_dir }}/kubectl create namespace test"
     changed_when: false
 
+  - name: Wait for API token of test namespace
+    shell: "set -o pipefail && {{ bin_dir }}/kubectl describe serviceaccounts default --namespace test | grep Tokens | awk '{print $2}'"
+    args:
+      executable: /bin/bash
+    changed_when: false
+    register: default_token
+    until: default_token.stdout.find('<none>') == -1
+    retries: 5
+    delay: 5
+
   - name: Run 2 busybox pods in test ns
     command: "{{ bin_dir }}/kubectl run {{ item }} --image={{ test_image_repo }}:{{ test_image_tag }} --namespace test --command -- tail -f /dev/null"
     changed_when: false