Fix/reference to iterator variable causes pointer problems

[HerrNaN]

In go-pas-client we convert the public models from the user to the interal models used for the actual request. In this conversion, when converting the band alarms list we do this:

for i, bandAlarm := range t.BandAlarms {
   threshold.BandAlarms[i] = bandAlarm.ToInternal()
}

This causes a problem when the ToInternal function on bandAlarm operates on a pointer to the struct rather than the struct itself. The function return an object with values that point back into the iterator variable and when we have more than one item in the list these values are set to the last value that was set in the iterator variable.

[j-sv]

Do a check on test code coverage.

[HerrNaN]