DCD-224: Rename some roles for clarity.

roles/product_install/tasks/main.yml

@@ -0,0 +1,14 @@
+---
+
+# Common case for most products and Jira editions.
+- name: Fetch ServiceDesk metadata if necessary
+  include_tasks: "servicedesk_download.yml"
+  when: atl_product_edition == "jira-servicedesk"
+
+# Differences for ServiceDesk become fiddly enough that it's better to
+# just split them out and move common functionality into individual
+# task files. This gives us some flexibility in the future if
+# necessary.
+- name: Fetch product metadata if necessary
+  include_tasks: "product_download.yml"
+  when: atl_product_edition != "jira-servicedesk"