fix for Issue 90 (#91)

tasks/Ubuntu/main.yml

@@ -4,6 +4,9 @@
 
   - include_vars: "{{ ansible_distribution }}.yml"
 
+  - name: Ensure that https transport is ready
+    apt: name=apt-transport-https state=present
+    
   - name: Ensure the Sensu APT repo GPG key is present
     apt_key:
       url: https://sensu.global.ssl.fastly.net/apt/pubkey.gpg