Removed the single assignment block from constraints
Merge pull request #218 from tboerger/feature/roxy/fix-constraints

Removed the single assignment block from constraints
Fix to work when keystone is behind haproxy
Use new helpers to get hostnames for endpoints
Generate dispersion.conf before running swift-dispersion-populate
HAProxy support for swift-proxy
Stop hardcoding 8080 port in several places

Using default attributes is just safer.