Via TMZ Lil Scrappy is a free man … for now … after a dubious pee test led to him being thrown in the slammer, TMZ has learned. As we reported, Scraps turned himself in to ATL authorities yesterday in response to a warrant that had been issued for his arrest. The warrant was issued over an alleged probation violation, stemming from his 2008 pot bust. Scrappy had been ordered to submit to a urine test in March, but according to authorities, he turned in a sample that was cold to the touch and may have been tampered with. Scrappy was asked to submit another cup, and allegedly refused. Scrappy…