Use the new REST protocol option to not depend on servlet to run tests

[jhanders34]

Short description of what this resolves:

Today liberty arquillian has a servlet dependency in order to run a test on the application server. To test functions like CDI and RESTful Web Services that do not require servlet, this is not suitable since MicroProfile and now Core Profile in Jakarta EE 10 does not require the application server to expose servlet API and function in applications. This PR provides a way to run a test on a server that does not have servlet enabled by using a RESTful Web Services resource instead.

Changes proposed in this pull request:

• Use the new RESTful Web Services arquillian protocol so do not need to depend on servlet in an application server in order to run tests on the server.
• Add a testProtocol option to the remote and managed liberty container functions to be able to specify either rest or servlet to run.
• Run the tests a second time with the rest configuration instead of servlet.
• Update Jakarta EE 9 README information for the new functions.
• Update version from 2.0.x to 2.1.0

Fixes: #113

[jhanders34]

I don't think I have enough experience in this area to do a full review. My main concern is with the number of items that changed names/ids to add servlet in order to distinguish from the new rest related items. Will those name/id changes affect the end user? An alternative would be to leave the existing ones as is and let the new rest related ones have the more specific name/id.

The name/id changes are just test related configuration. A user can name their names and ids any name they want as long as they are unique to the type.

Arquillian PR created now: https://github.com/arquillian/arquillian-core/pull/407 with the same content as the liberty rest protocol except with the org.jboss package prefix instead of io.openliberty. The tests pass with the content of the arquillian PR's rest protocol as well.

I suggest focusing on the liberty managed and remote projects since the arquillian rest protocol implementation will be provided by arquillian eventually.

[cherylking]

Just wanted to mention that the dependencies bundle will probably need updating after these changes. https://github.com/OpenLiberty/arquillian-liberty-dependencies