With the increasing number of entries in the service_catalog header,
some projects will have a header bigger than 8192 and Swift cannot
handle headers of this size. Solum is the first one to have this issue
As a temporary hack to fix Solum's gate, we are increasing
the value of the max_header_size parameter in our "lib" script.
This patch makes this settings global to all projects using devstack,
so that in a near future, if a project has a service_catalog header
bigger than 8192, it doesn't have the same problems we had.
Closes bug 1316585
Change-Id: I5c15f8f9531839353c3d99e46d920688058ec33c
63024d9125