add inputs to task config

Signed-off-by: Taylor Silva <taylorsilva@outlook.com>

tasks/generic-outputs.yml

@@ -3,10 +3,13 @@ image_resource:
   type: mock
   source: {mirror_self: true}
 
+inputs:
+- name: main
+- name: dev
+
 outputs:
 - name: main
 - name: dev
-- name: ci
 
 run:
   path: sh
@@ -17,4 +20,3 @@ run:
     echo "creating versions"
     echo "hello-world" > main/version
     echo "hey there dev" > dev/version
-    echo "hi ci" > ci/version