v0.7.2

• No new features or changes in Python scripts
• Change repo name to sfc (SolidFire Collector)
• Migrate old master from https://github.com/scaleoutsean/hcicollector/ (v0.7.1)
• Update version strings in Dockerfile(s) and YAML files (graphiteapp, Grafana, graphyte)
• Remove old branches/releases to clean up and make it easier to update
• Update sfc on Docker Hub to v0.7.2