Bug 29936: Add holds_get_captured option to sip config

Bug 29936: Add holds_get_captured option to sip config

This patch adds a new option to the SIP config, allowing for hold
capture to be disabled on difference devices. We still notice the hold
and alert the user, but we do not trigger the update in the system to
mark the hold as found (waiting, processing or in transit).

Sponsored-by: Cheshire Libraries Shared Services
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Sally <sally.healey@cheshiresharedservices.gov.uk>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>