rename need_zip to need_sso_zip

roles/check-env/tasks/main.yml

@@ -56,11 +56,11 @@
   stat:
     path: "{{ ansible_facts['user_dir'] }}/Downloads/rh-sso-{{ sso_z }}-server-dist.zip"
   register: sso_zip
-  when: need_zip
+  when: need_sso_zip
 
 - assert:
     that: sso_zip.stat.exists
     fail_msg: "ERROR: RHSSO ZIP not downloaded! Please go to section 'Before You Begin' in your book."
     success_msg: "OK: Found RHSSO ZIP file."
-  when: need_zip
+  when: need_sso_zip
 ...

roles/check-env/vars/main.yml

@@ -1,10 +1,8 @@
 ---
-tools:
-  oc:
-    final_name: /usr/bin/oc
-    completion: yes
-    completion_file: oc
-clusters:
-  - ocp4
-need_zip: yes
+# need the following variables somewhere in global vars collection:
+# 
+#  - tools
+#  - clusters
+#
+# consult the role tasks file for an explanation
 ...