Monty Taylor 57c7899cf0 Make project-config gating in zuul v3
So that we can land a changes to project-config after v2 has been turned
off, shift project-config to v3 and remove from v2.

Change-Id: I67fc88a86d4e8b094cab88929bb6b8c47198964a
Depends-On: I7cfb90df4eb49defce7aa41453918347a2c6742e
2017-09-26 10:40:22 -07:00
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