Replaced httpunit by htmlunit

[arjantijms]

Added convenience method for getting raw content from server and disabled throwing exception upon 403.

[arjantijms]

Hi,

All the tests are now failing with this;

java.lang.Exception: {"JBAS014771: Services with missing/unavailable dependencies" => ["jboss.undertow.deployment.default-server.default-host./b86b0b08-78c7-4970-9ac3-3fb77cead7a3.UndertowDeploymentInfoService is missing [jboss.security.security-domain.jaspitest]"]}

See e.g. https://arungupta.ci.cloudbees.com/job/Java%20EE%207%20Samples%20on%20WildFly-cb/lastCompletedBuild/testReport/org.javaee7.jaspic.ejbpropagation/ProtectedEJBPropagationTest/org_javaee7_jaspic_ejbpropagation_ProtectedEJBPropagationTest/

Most likely the dummy security domain in standalone.xml has to be added again. It's this configuration:

 <security-domain name="jaspitest" cache-type="default">
                <authentication-jaspi>
                    <login-module-stack name="dummy">
                        <login-module code="Dummy" flag="optional"/>
                    </login-module-stack>
                    <auth-module code="Dummy"/>
                </authentication-jaspi>
            </security-domain>

Incidentally, this is why this kind of config should not be necessary. It's too easy to forget and especially new users will be baffled by it. As it's just a dummy config that essentially does nothing the user should also not be asked to add it. But alas... adding it for now should hopefully improve the test results again.