Raise timeout for get netchecker agents

tests/testcases/040_check-network-adv.yml

@@ -44,7 +44,7 @@
       run_once: true
       delegate_to: "{{groups['kube-master'][0]}}"
       register: agents
-      retries: 6
+      retries: 18
       delay: "{{ agent_report_interval }}"
       until: "{{ agents.content|length > 0 and
         agents.content[0] == '{' and
@@ -71,6 +71,7 @@
       failed_when: not result|success
       run_once: true
       when: not agents.content=='{}'
+      delegate_to: "{{groups['kube-master'][0]}}"
 
     - debug: msg="Cannot get reports from agents, consider as PASSING"
       run_once: true