Kie server: enable BASIC auth. + adapt tests to use it

Added security configuration into web.xml + added jboss-web.xml that specifies the default security domain (other) in EAP and Wildfly.

The tests were adapted to use the secured client. In case the local server (aka TJWS) is running, the auth. is not used as TJWS does not really care about the config in web.xml. This way the tests can be easily run from the IDE.

I am not really sure about the role name. `kie-server` is the best what I could think of.