When we Add Sampler -> JPOS Sampler then its configuration always using last cache

[DhonyImamS]

Hi Erlangga,

This is kindly helpful actually, but it doesn't meet standarize, when you add New Sampler JPOS, then all of field inside should be back into default value ( maybe default value is blank )

As Is, your Sampler always take the last configuration when adding new sampler

please fix this again

thanks very muach