Use longer version for imagestream

Older version of origin-clients does not work with
short version (oc get is)

playbooks/roles/os_temps/tasks/setup_os_templates.yml

@@ -151,5 +151,5 @@
 
 # Setup tag if container image build successful
 - name: Modify tags on images
-  shell: "{{ oc_bin }} get is | awk '{print $2}' | grep -v DOCKER | sed 's/.*5000\\///g' | grep '{{ build_config_name_file.stdout }}' | xargs -i {{ oc_bin }} tag {}:latest {}:{{ tag }}"
-  when: modify_tags|bool == true and build_success|bool == true
+  shell: "{{ oc_bin }} get imagestream | awk '{print $2}' | grep -v DOCKER | sed 's/.*5000\\///g' | grep '{{ build_config_name_file.stdout }}' | xargs -i {{ oc_bin }} tag {}:latest {}:{{ tag }}"
+  when: modify_tags|bool == true and build_success|bool == true