resolve bug #160
creating virtualbox instruction file
Update virtualbox.md
Update virtualbox.md
change from Dell email to ongoing email
add title
add no ISOs info
add milestone flag to role and covert noop references to use it
add test for network create
remove unused function
depricate old version of calls
allow simulator to set os types (fix broken node_role update)
no admin nodes on list
using host as default network tell CB to allocate IPs
assign os via attribute, fix transaction
Merge branch 'master' into issue160
Add tcpdump to our required package list in kvm-admin.

For now, we have to have tcpdump to do our automatic switch
configuration.  Until I pull this out of ohai and put it in its own
role, it needs to be in place before we tryt and run a kvm admin node.
Move Ethernet device speed finding to the Network cookbook.

This moves the code we use to detect what speeds an Ethernet device
supports out of ohai and in to the network cookbook.  This prevents
everyone from the additional network round trips that were potentially
needed to pull in the cstruct gem when we did not need it, and places
the speed detection code with its only user.

The speed detection code now also knows how to detect 2.5g, 20g and 40g
links for the proud owners of such exotic hardware.
Merge pull request #172 from VictorLowther/require-tcpdump

+2 Add tcpdump to our required package list in kvm-admin.
Allow the Crowbar core to turn idle nodes off.

If a node has been fully discovered (or had its operating system
installed), we know how to turn it back on, and it has nothing else to
do, turn the node off.  The framework will turn the node back on when a
node role bound to it is committed.