fixed 5.3.2.1.2

    [Documentation]    Test ID: 5.3.2.1.2

    ...    Test title: GET information about multiple NS instances

    ...    Test objective: The objective is to test the retrieval of all the available NS Instances and perform a JSON schema and content validation of the collected instance data structure

    ...    Pre-conditions: An existing Ns instance.

    ...    Pre-conditions: An NS Instance is already created

    ...    Reference: clause 6.4.2.3.2 - ETSI GS NFV-SOL 005 [3] v2.4.1

    ...    Config ID: Config_prod_NFVO

    ...    Applicability: none.