Make item name of netapp luns unique

[bbayer1]

General information

This change makes the item name of the netapp_ontap_luns check unique to make sure, that all luns are actually monitored.

Proposed changes

Prior to this change, only the last part of the LUN path was used as the item name.

Therefore, a LUN with path /vol/lun_w2k19_vol/lun_w2k19 resulted in an item name lun_w2k19.

If you have multiple LUNs ending with the same name, you would end up monitoring just one LUN .

To make things even more complex, not even the full LUN path is guaranteed to be unique. This is, because you can have identical LUN paths, as long as they are in two different SVMs.

To summarize this. To uniquely identify a lun we need the SVM + full lun path as item name.

iscsi_aix_test:/vol/lun_w2k19_vol/lun_w2k19

The SVM and volume details in the check summary are kind of obsolete with the change, because the service description already contains this information.

Please be aware, that you have the same issue with interfaces, and qtrees. You should consider that as well.