LP#1386347 hard-coded queue stats for captured holds

LP#1386347 hard-coded queue stats for captured holds

Return queue position = 1 and # potential copies = 1 for captured
holds.  This change is a result of the fact that captured holds no
longer retain their potential copies list, so the queue calculation can
no longer take place for potential copies (plus it speeds up queue calc
for potential copies).

Signed-off-by: Bill Erickson <berickxx@gmail.com>