tashi-client: correct command examples               fix instance name length correction               extend getVmLayout to provide getSlots (how many VMs of a size can be created now)
tashi-client: correct command examples
              fix instance name length correction
              extend getVmLayout to provide getSlots (how many VMs of a size can be created now)


git-svn-id: bf82309ee31681273af20a825c7064ea7c5af838@1169600 13f79535-47bb-0310-9956-ffa450edef68

stroucki/tashi,stroucki/tashi,stroucki/tashi