MQE-1627: RetrieveEntityField generation does not consider ActionGroup

[KevinBKozan]

Description

• Testgenerator fix
• verification tests addition

Fixed Issues (if relevant)

• RetrieveEntityField generation does not consider ActionGroup as part of namespace #317

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/verification tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)
• Changes to Framework doesn't have backward incompatible changes for tests or have related Pull Request with fixes to tests

[coveralls]

Coverage increased (+0.04%) to 52.909% when pulling dc004a2 on MQE-1627 into 26ef6b0 on develop.

[coveralls]

Coverage increased (+0.04%) to 52.909% when pulling dc004a2 on MQE-1627 into 26ef6b0 on develop.

[coveralls]

Coverage increased (+0.04%) to 52.909% when pulling dc004a2 on MQE-1627 into 26ef6b0 on develop.