app_queue: Fix preserved reason of pause when Asterisk is restared

When the Asterisk is restared is not preseved reason paused of members.
This patch fixed this cases, retain data on astdb and set when Asterisk
is started.

ASTERISK-25732 #close

Report by: Rodrigo Ramírez Norambuena

Change-Id: Id3fb744c579e006d27cda4a02334ac0e4bed9eb5