fixed 422 unprocessable entity -> content

    Check HTTP Response Status Code Is    400

    Check HTTP Response Body Json Schema Is    ProblemDetails

POST Create a new subscription - Unprocessable Entity

POST Create a new subscription - Unprocessable Content

    [Documentation]    Test ID: 5.3.2.15.16

    ...    Test title: POST Create a new subscription - Unprocessable Entity

    ...    Test title: POST Create a new subscription - Unprocessable Content

    ...    Test objective: The objective is to test the creation of a new lifecycle management subscription fials when content type of the payload body is supported and the payload body of a request contains syntactically correct data but the data cannot be processed

    ...    Pre-conditions: none

    ...    Reference: Clause 6.4.16.3.1 - ETSI GS NFV-SOL 005 [3] v4.4.1