Fix variable check task name | refs #32914

ansible/roles/mediacache/tasks/main.yml

 ---
 
-- fail: msg="Please define the MediaCache DNS (mc_url variable) in your inventory for each MediaCache server"
+- name: check mc_url variable
+  fail:
+    msg: "Please define the MediaCache DNS (mc_url variable) in your inventory for each MediaCache server"
   when: (mc_url is not defined) or (mc_url|length == 0)
 
-- fail: msg="Please define the MediaServer DNS (ms_url variable) in your inventory for each MediaCache server"
+- name: check ms_url variable
+  fail:
+    msg: "Please define the MediaServer DNS (ms_url variable) in your inventory for each MediaCache server"
   when: (ms_url is not defined) or (ms_url|length == 0)
 
 - name: resolve domain name to localhost