change tests, full path of kubectl binary

tests/testcases/030_check-network.yml

@@ -4,7 +4,7 @@
   tasks:
 
   - name: Get pod names
-    shell: "kubectl get pods -o json"
+    shell: "/usr/local/bin/kubectl get pods -o json"
     register: pods
 
   - set_fact:
@@ -18,4 +18,4 @@
 
 
   - name: Ping between pods is working
-    shell: "kubectl exec {{pod_names[0]}} -- ping -c 4 {{ pod_ips[1] }}"
+    shell: "/usr/local/bin/kubectl exec {{pod_names[0]}} -- ping -c 4 {{ pod_ips[1] }}"