Add checkvars for usability

.gitignore

@@ -1,3 +1,4 @@
 *~
 .vagrant
 *.retry
+.cache/

tasks/checkvars.yml

@@ -0,0 +1,31 @@
+---
+
+- name: checking variable...
+  block:
+    - name: bbb_letsencrypt_email
+      debug:
+        msg: "value: {{ bbb_letsencrypt_email }}"
+      when: bbb_letsencrypt_enable
+    - name: check bbb_coturn_secret
+      debug:
+        msg: "value: {{ bbb_coturn_secret }}"
+      when: bbb_coturn_enable
+    - name: check bbb_greenlight_secret
+      debug:
+        msg: "value: {{ bbb_greenlight_secret }}"
+      when: bbb_greenlight_enable
+    - name: check bbb_greenlight_db_password
+      debug:
+        msg: "value: {{ bbb_greenlight_db_password }}"
+      when: bbb_greenlight_enable
+    - name: check distribution
+      debug:
+        msg: "distribution should be bionic and was detected as {{ ansible_distribution_release }}"
+      failed_when: ansible_distribution_release | lower != 'xenial'
+  rescue:
+    - name: CHECK YOUR VARIABLES!
+      debug:
+        msg: "{{ ansible_failed_result }}"
+      failed_when: ansible_failed_result.failed
+  tags:
+    - checkvars

tasks/main.yml

@@ -1,4 +1,6 @@
 ---
+- import_tasks: checkvars.yml
+
 - name: Install required packages
   apt:
     name: "{{ bbb_required_packages }}"