Add point attributes such as "instrumenttag" to "fields" for search controller
Currently, as shown in the link below,
The "instrumenttag" as well as other PI point attributes are not selectable in "fields".
The selectable ones are shown below:
afcategory; attributes; datatype; description; endtime; haschildren; itemtype; links; matchedfields; name; plottable; starttime; template; uniqueid; uom; webid