[jakartaee-tck-dev] Started removing the EETest base class

[Scott Stark <starksm64@xxxxxxxxx>]

In the last batch of persistence test appclient updates I started
removing the common EETest base class and just embed the Client test
class into a servlet using CDI. These were non-vehicle tests that were
directly invoking remote ejbs. Now the appclient is a thin class that
calls into the servlet using a proxy. See the
ee.jakarta.tck.persistence.ee.packaging.ejb.resource_local package for
an example.

For EE 12 we should move these over to using the standard Arquillian
servlet protocol with no appclient usage.