Add single template resource support for Soy in Template Engine API

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.1.10 DXP FP14, 7.1.X
• Component/s: Portal Services > Templates Engine
• Labels:
  • liferay-fixpack-dxp-14-7110
• Branch Version/s:
  7.1.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/tinatian/liferay-portal-ee/pull/173

In Liferay 7.2+, support for multi-template resources has been removed (in LPS-93847) since Soy was the only type of resource that needed to render multiple template resources at the same time. When this removal took place, a single-template composite resource was added for Soy to still allow it to render multiple resources at the same time.

We should backport this composite Soy single-template resource to 7.1 to allow for better interoperability between 7.2 and 7.1.