Issue #605: Updated when condition for checking buildah images

Signed-off-by: blesson-james <blesson_james@Dellteam.com>

control_plane/roles/provision_cobbler/tasks/check_prerequisites.yml

@@ -50,7 +50,7 @@
   when: "'cobbler' not in k8s_namespaces.stdout"
 
 - name: Inspect the cobbler image
-  command: "buildah images {{ cobbler_image_name }}"
+  command: "buildah images"
   register: cobbler_image_result
   failed_when: false
   changed_when: false
@@ -66,7 +66,7 @@
 - name: Update cobbler image status
   set_fact:
     cobbler_image_status: true
-  when: "'No such image' not in cobbler_image_result.stderr"
+  when: cobbler_image_name in cobbler_image_result.stdout
   tags: install
 
 - name: Update cobbler container status
@@ -103,4 +103,4 @@
     - cobbler_container_status
     - "'CentOS' in cobbler_profile_list.stdout"
     - "'* * * * * /usr/bin/ansible-playbook /root/tftp.yml' in crontab_list.stdout"
-    - "'*/5 * * * * /usr/bin/ansible-playbook /root/inventory_creation.yml' in crontab_list.stdout"
+    - "'*/5 * * * * /usr/bin/ansible-playbook /root/inventory_creation.yml' in crontab_list.stdout"