Assign all ProcessCallable implementation a serialVersionUID

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.1 CE GA2, 6.1.20 EE GA2
• Fix Version/s: 6.1.30 EE GA3, 6.2.0 CE M4
• Component/s: Core Infrastructure, Fault Tolerance > Portlet Sandboxes, Portal Services, Portal Services > Component Management, Testing
• Labels: None
• Branch Version/s:
  6.1.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/9106

This is preparation for dynamic instrumenting ProcessCallable both pitcher and catcher sides.

Without an explicit serialVersionUID, for the same given ProcessCallable, by applying the same instrumenting logic on both pitcher and catcher sides, we may get two instrumented classes with different auto-generated serialVersionUID, which will cause deserialization failure.