make configurable the kubeburner indexing period

Change-Id: I56aaf32fecb11ae260a89817fc7e77bf69b7991d

ansible/install/group_vars/all.yml

@@ -17,6 +17,7 @@ python_interpreter: /usr/bin/python3.6
 kubeconfig_path: /home/kni/clusterconfigs/auth/kubeconfig
 kube_burner_path: https://github.com/cloud-bulldozer/kube-burner/releases/download/v1.7.12/kube-burner-V1.7.12-linux-x86_64.tar.gz
 ocp_metrics_query: roles/index-ocp-data/templates/metrics.yaml
+kubeburner_index_interval: 10 #in minutes
 
 # OpenStack Installer
 # Tripleo is the only installer supported currently

ansible/install/roles/index-ocp-data/tasks/main.yml

@@ -10,7 +10,7 @@
 
 - name: calculate start time from end time
   set_fact:
-    start_time: "{{ end_time | int - 1800 }}"
+    start_time: "{{ end_time | int - (kubeburner_index_interval | int * 60) }}"
   when: start_time is undefined
 
 - name: Check if all variables are defined

ansible/install/toggle-indexing-cron-job.yml

@@ -19,17 +19,17 @@
             name: index-ocp-data
           vars:
             start_time: "{{ log_file.stat.mtime | int }}"
-          when: log_file.stat.exists and (file_age | int < 30)
+          when: log_file.stat.exists and (file_age | int < kubeburner_index_interval | int)
 
         - name: run the ansible task without start time
           include_role:
             name: index-ocp-data
-          when: not log_file.stat.exists or (file_age | int >= 30)
+          when: not log_file.stat.exists or (file_age | int >= kubeburner_index_interval | int)
       when: cron_state == "absent"
 
     - name: toggle the indexing OCP data cron job
       cron:
-        name: "Index ocp data every 30 mins"
-        minute: "*/30"
+        name: "Index ocp data for the given time"
+        minute: "*/{{ kubeburner_index_interval | int }}"
         job: "PATH=/usr/local/bin:/usr/bin:/bin && /usr/bin/ansible-playbook {{ browbeat_path }}/ansible/install/index-ocp-data.yml > /tmp/ocp_index_cron.log 2>&1"
         state: "{{ cron_state }}"