test(DescriptorSrv) added tests for DescriptorSrv

Signed-off-by: Gonzalo Ruiz de Villa <gonzalo.ruizdevilla@adesis.com>
feat(DescriptorSrv) objects with properties with same name different type make mixed arrays

Signed-off-by: Gonzalo Ruiz de Villa <gonzalo.ruizdevilla@adesis.com>