Zuul no longer requires the project-name for in-repo configuration.
Omitting it makes forking or renaming projects easier.
Change-Id: I45531a8827d1fc8d624c1e7a73e1d7df0ca2a0a2
Migrate all functional jobs and gate to zuul v3.
Needed-By: Id1e0e335ee0937d34b29eb35970825163d757a00
Needed-By: I643b613984382c3e2d913a2cec660fe0146485e3
Change-Id: Ibab65befb8545911bb7c1dbc3ecef0cf6188abcd