lttng: Update the TestValues scripts used in tests

lttng: Update the TestValues scripts used in tests

Some maintenace of the {Generate}TestValues scripts:
- Make them work with the new analysis module, which would expect
  a canonical class names.
- Remove static/final modifiers, they are implied by being in an
  interface.
- Update some javadoc.

Change-Id: I423984ce0a930a2fd1f1b5262210cbfba5ed3cd0
Signed-off-by: Alexandre Montplaisir <alexmonthy@voxpopuli.im>
Reviewed-on: https://git.eclipse.org/r/39903
Reviewed-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>