This patch renames every package, file, match of Marconi in the codebase
to Zaqar *except* for the .gitreview file, which will have to be updated
*after* I8e587af588d9be0b5ebbab4b0f729b106a2ae537 lands.
Implements blueprint: project-rename
We are not responsible for marconi.openstack.common code so it
will be excluded from our Coverage report. Also excluding
NotImplementedErrors as there's obviously no implementation in
that case to be tested.