Since we install Zuul for the linters job, we need to have its binary
dependencies installed. libre2 was recently added.
Change-Id: I14354b5f67e48877fe1caddb273bf8b1d5669c85
This copies the documentation scaffold, packaging setup, testing
framework and development environment files from the zuul-jobs repo
for consistency.
Change-Id: I64046054a65c3e01b0b81c01813482b67535d51b
Depends-On: Ib43621d29c4082c3a34a221a6462910364c19319