Main 124177 portal sdk unit tests

[CidHighwindVII]

What was done

Adapt code so it was possible to create unit tests in portalSDK

[afjsilva]

Missing unit tests described on WI to try get some coverage to some possible paths:
Unit test for new standalone environment
Unit test for new environment on an infrastructure
Unit test for an agent creation on a simple infrastructure that already exists
Unit test for an infrastructure creation with an agent
Unit test for a new version of an environment from infrastructure
Unit test for a new version of a standalone environment