29: Fix failing tests due to CompilationTestHelper changes 

Change-Id: Iaeeb6bc1a6062c1baa71503c4d4da85d60d1c5f0
Task-Url: https://github.com/LorenzoBettini/xsemantics/issues/issue/29
exclude Guice modules from sonar analisys

To avoid Sonar issue: "Generic wildcard types should not be used in
return parameters"

Change-Id: I64660c1cb8b2f676d5ab558d4261244e14a8cd74
29: clean up tests

Closes #29

Change-Id: I84132ed05a325e06f7f7b5414935152f0383deba
Task-Url: https://github.com/LorenzoBettini/xsemantics/issues/issue/29