test_product: team_id optional
test_product: team_id optional

product['team_id'] in the result of the
creation of a product is checked whether the
api return or not the field. This is a transition
towards the removal of the team_id field in products.

Change-Id: I3c12264a100d3167427b0c8ed7322b339c5b85b3

redhat-cip/python-dciclient,redhat-cip/python-dciclient