convert ServiceTemplate.orderable? to supports?(:order)

[kbrock]

Moving ServiceTemplate over to pure supports mixin

This allows us to dropping ServiceTemplate#orderable? in ManageIQ/manageiq#22883

[miq-bot]

Checked commit kbrock@12917ee with ruby 2.7.8, rubocop 1.56.3, haml-lint 0.51.0, and yamllint
5 files checked, 9 offenses detected

app/helpers/application_helper/button/orchestration_template_orderable.rb

• ❗ - Line 3, Col 5 - Rails/HelperInstanceVariable - Do not use instance variables in helpers.
• ❗ - Line 3, Col 65 - Rails/HelperInstanceVariable - Do not use instance variables in helpers.

app/helpers/application_helper/button/orchestration_template_view_in_catalog.rb

• ❗ - Line 3, Col 5 - Rails/HelperInstanceVariable - Do not use instance variables in helpers.
• ❗ - Line 3, Col 65 - Rails/HelperInstanceVariable - Do not use instance variables in helpers.

app/views/orchestration_stack/_stack_orchestration_template.html.haml

• 💣 💥 🔥 🚒 - Line 1 - Do not repeat id "#form_div" on the page
• 💣 💥 🔥 🚒 - Line 32 - Do not repeat id "#form_div" on the page
• ⚠️ - Line 22 - Avoid using instance variables in partials views
• ⚠️ - Line 24 - Avoid using instance variables in partials views
• ⚠️ - Line 24 - Line is too long. [89/80]

[kbrock]

For now, keeping orderable
ServiceTemplate and OrchestrationTemplate both implement the method (though one uses supports and the other uses an attribute in the model)

We may want to address in the future