Manage queue membership for auction queue dynamically

This avoids the telephone in the studio ringing all the time

extensions.conf

@@ -782,6 +782,7 @@ same  => n,Read(input,/etc/asterisk/media/playback/gebot-bestaetigen,1,,1,7)
 same  => n,GotoIf($[ "${input}" != "1" ]?start)
 same  => n,Set(DB(auction/open)=1)
 same  => n,Set(DB(auction/bid)=${startbid})
+same  => n,RemoveQueueMember(auction,SIP/22)
 same  => n,Playback(queue-thankyou)
 
 ; Close bidding
@@ -789,6 +790,7 @@ exten => 92,1,Answer()
 same  => n,Wait(0.5)
 same  => n,Set(DB(auction/open)=0)
 same  => n,Playback(queue-thankyou)
+same  => n,AddQueueMember(auction,SIP/22)
 same  => n,Hangup()
 
 [to-eventphone]

queues.conf

@@ -575,5 +575,5 @@ announce-position=yes
 announce-to-first-user=yes
 announce-frequency=10
 announce-holdtime=no
-member => SIP/21
 context = record-bid
+; members are added dynamically, so auction doesn't ring all the time