Rumor About Universal Music Group Mediating Drake & Kendrick Beef Not True

There's a rumor going around that Drake and Kendrick Lamar's shared music label tried to force them to squash their beef -- but turns out, it's totally unfounded ... TMZ has learned. Here's the deal ... a blind item is being circulated that purports to have the inside scoop on an alleged meeting between Kendrick, Drake and Universal Music Group ... which both artists are technically signed to via distribution…