Case-Mgmt KIE Server extension and jBPM-UI KIE Server extension cant't be registred without a jBPM extension.
Actual state of the server output make no sense:
...
WARN  [org.kie.server.services.casemgmt.CaseKieServerExtension] (ServerService Thread Pool -- 97) jBPM extension not found, Case Management cannot work without jBPM extension, disabling itself
INFO  [org.kie.server.services.impl.KieServerImpl] (ServerService Thread Pool -- 97) Case-Mgmt KIE Server extension has been successfully registered as server extension
...

Align reactivity support for Collection interfaces

Sometimes Kie server router needs to return different URL
in its kie-server-info response than he actually listens to locally.
This can happen in case Kie server router is placed behind
another router, for example if it is deployed in OpenShift.

* kie-server-tests: improve case stage coverage

* kie-server-tests: improve Case dynamic task coverage

* JBPM-4646 - Case management - fixed and aligned case stages

RHBPMS-4514 - Null Pointer exception occurs for Business Process with empty Embedded SubProcess (#750)

To allow clients to better handle the different type of errors that could be thrown while executing http requests to the Kie Server.

JBPM-4646 - Case management - merge case milestones from instance and definition to provide complete view (#728)

* the scanner works asynchronously, using own thread, so the releaseIds
   can be basically updated any time. We need to make sure to always
   update the releaseIds before actually returning the container resource

PLANNER-661 PLANNER-604 Execution Server: SolverInstance.score doesn't use the ScoreJaxbXmlAdapaters?

- Added Providers for forms.

KIE forms jBPM Integration:
- Added missing license headers
- Added new forms to tests (new .frm, .ftl & .form) to full test.

KIE forms jBPM Integration:
- Removed @Dependent annotations

KIE forms jBPM Integration: Fixing test

KIE forms jBPM Integration: - Added Providers for forms - support for form type when retrieving form as now there are three types supported

KIE forms jBPM Integration:
- Removed default form generation
- Added support to retrieve any type of form when no formType is specified
- Added hability to return the form content without any marshalling

KIE forms jBPM Integration:
- Removed default form generation, fixed SPI

KIE forms jBPM Integration:
- Fixed method call

KIE forms jBPM Integration:
- Fixed method call & tests