Reject Set Config packet with Product Code = 0 and adapt API manual accordingly

In API manual "EtherNetIP Adapter V5 Protocol API 01 EN Draft 2.pdf" at page 86 (4.1.1 Set Configuration Parameters) the description of parameters usProductType and usProductCode allows 0 values:

The value 0 is not a valid Product Type. However, when using value 0 here, the stack automatically chooses the default Product Type (0x0C).

The value 0 is not a valid Product Code. However, when using value 0 here, the stack automatically chooses the default Product Code dependent on the chip type (netX50/100 etc.) that is used.

When 0 values are used for parameters usProductType and usProductCode in EIP_APS_SET_CONFIGURATION_PARAMETERS_REQ, 0 values will be returned in Identity object for Device Type and Product Code.

EIP_APS_SET_CONFIGURATION_PARAMETERS_REQ     0x00003612

<V3, 192.168.10.2, T -> O modeless>

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   01 01
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