JBQA-5129 Negotiation tests covering - identity propagation (ticket forwarding), web authentication fallback to FORM method, AdvancedLdapLoginModule tests
update tx subsystem to use the transformation builders
convert web subsystem to transformation builders
allow custom write and undefine operations
[AS7-6334] add expression testing to the web module
[AS7-6334] add expression testing to the web module

* replace use of SimpleListAttributeDefinition by StringListAttributeDefinition
* fix transformation setup for SSL resource
* fix StringLengthValidator setup for STRING attributes that allow expressions
* fix XML parsing of attribute that allow expressions
* fix FailedOperationTransformationConfig fixture
[AS7-6334] add expression testing to the transaction module

* make sure only attributes that have allowed expressions since legacy versions are rejected by the transformers
AS7-6412 TransformerLogger improvements
AS7-6334 Run threads transformation tests against both 7.1.2 and 7.1.3
Add zanata dependency to the core-model-test/test-controller-7.1.2 pom as it uses the jboss-parent pom for it's parent. Not having zanata as a dependency causes a build failure when running the plugin.
Test and transformer for the EE subsystem.

Although the model version is the same now as it was in 7.1.2 and 7.1.3, there was a
bug in 7.1.2 (AS7-4892) which we need to work around, so we need a transformer.
[AS7-6334] Placeholder tests for xts