Stabilize some jBPM integration tests by upgrading TJWSEmbeddedJaxrsServer embedded server

When running integration tests for droolsjbpm-integration repo from time to time there are some random failures related to some integration test like KieControllerStartupIntegrationTest mainly (most of them related to `testContainerDisposedAfterStartup` method).

To fix these, we should upgrade the already deprecated embedded server (TJWSEmbeddedJaxrsServer[1][2]) in use by these test classes with some other embedded server like UndertowJaxrsServer

These tests might need to be refactored to use a more reliable container instead of embedded `TJWSEmbeddedJaxrsServer`

Stacktrace:

java.util.concurrent.TimeoutException: Synchronization failed for defined timeout: 240000 milliseconds. 
at org.kie.server.integrationtests.controller.KieControllerStartupIntegrationTest.testContainerDisposedAfterStartup(KieControllerStartupIntegrationTest.java:207)

output.log

[1] https://github.com/kiegroup/droolsjbpm-integration/blob/master/kie-server-parent/kie-server-tests/kie-server-integ-tests-common/src/main/java/org/kie/server/integrationtests/shared/KieControllerExecutor.java#L32

[2] https://github.com/kiegroup/droolsjbpm-integration/blob/master/kie-server-parent/kie-server-tests/kie-server-integ-tests-common/src/main/java/org/kie/server/integrationtests/shared/KieServerExecutor.java#L37