Add confogl_addcvar director_allow_infected_bots 0 to properly block infected bots

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Confogl currently blocks infected bots by kicking them when they join the game, 
this leaves the problem that they cause confusion (in 2v2 and 1v1 all the time) 
because they appear on subtitles like [Jockey Alert] etc. and make a short 
noise. (Maybe they even mess with spawn rotation? Dunno.)

Anyways, with a recent update VALVe added the director_allow_infected_bots cvar 
which can be used to stop the director from randomly spawning infected bots to 
avoid the above mentioned problems.

Original issue reported on code.google.com by Dynastic...@googlemail.com on 10 Dec 2010 at 11:15

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I was planning on doing this shortly after the update but completely forgot.

Original comment by Canada.R...@gmail.com on 12 Dec 2010 at 4:54

• Changed state: Accepted

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Finally got around to adding this line.  Commit is done but I've yet to push.

Original comment by Canada.R...@gmail.com on 13 Jan 2011 at 2:49

• Changed state: Fixed