tree f042d7085a4dec97abcf0b358d9ed74116fd14ab
parent 6f27fca4a76aceaadab3776c87c48743671ce502
author James E. Blair <jeblair@redhat.com> 1520003114 +0000
committer James E. Blair <jeblair@redhat.com> 1523998117 -0700

Automatically set LIBS_FROM_GIT based on required projects

If a project shows up in zuul's required-projects list, add it
to LIBS_FROM_GIT automatically.  This way, when a user specifies
that a job requires a zuul-project, it gets used in testing, but
otherwise, it doesn't (pypi is used instead).

Also add information about what happens behind the scenes for both
LIBS_FROM_GIT and plugin dependencies.

This moves the check performed in check_libs_from_git to
a helper function which is installed for most kinds of
installations.  This means that if someone sets LIBS_FROM_GIT to
"foobar", devstack won't error anymore, as nothing is going to
try to install foobar, therefore the check won't run on that.
However, as we move to automated generation of the local config,
that error is not likely to happen.  This check was originally
added due to an error in the upper-constraints file (where a
constraint name did not match a package name).  This location of
the check would still catch that type of error.

Change-Id: Ifcf3ad008cf42d3d4762cfb3b6c31c93cfeb40db