Add some more useful URLs
Add some more useful URLs

Allow the SSH and R/O clone URLs to be passed as options

Also add a URL for the repo's web presence

These are all intended to be used when integrated with tools like
gitlab

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome